1864
1864 is the year of the first Geneva Convention.
- Even
- Composite
Where 1864 fits
Why 1864 is special
Twelve states agreed that battlefield medical staff and the wounded would be treated as neutral. It followed one man's account of the aftermath of a single battle, and it is the origin of the Red Cross emblem.
Same number, different meanings
How 1864 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Twelve states agreed that battlefield medical staff and the wounded would be treated as neutral. It followed one man's account of the aftermath of a single battle, and it is the origin of the Red Cross emblem.
- History
In 1864, the first Geneva Convention established protection for the wounded and for those treating them (Switzerland).
- Law & regulation
Henry Dunant's account of the aftermath at Solferino led directly to the 1864 convention protecting the wounded and those treating them. Most of modern international humanitarian law descends from that one agreement.
1864 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 4, 8, 233, 466, 932, 1864
- Prime factorisation
- 2^3 × 233
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1864
- Scientific notation
- 1.864 × 10^3
Roman numerals
M D C C C L X I V
MDCCCLXIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 1 1 0 1 0 0 1 0 0 0
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 1,864
Octal
3 5 1 0
3 × 512 + 5 × 64 + 1 × 8 + 0 × 1 = 1,864
Hexadecimal
7 4 8
7 × 256 + 4 × 16 + 8 × 1 = 1,864
Read as powers of two: 1,024 + 512 + 256 + 64 + 8 = 1,864.
In historical numeral systems
Egyptian
1 lotus, 8 coils of rope, 6 hobbles, 4 strokes
1 × 1,000 + 8 × 100 + 6 × 10 + 4 × 1 = 1,864. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges + 1 vertical wedge (sixties place), 4 vertical wedges (units place)
31 × 60 + 4 = 1864. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
Related numbers & connections
1864 is a year in the 19th century, in the 1860s.
The Geneva Convention of 1864 protected the wounded and the Hague Convention of 1899 regulated the conduct of war more broadly. Modern humanitarian law descends from both.
View 1899 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1899
why?
Strength 0.50, confidence "high".
History
In 1864, the first Geneva Convention established protection for the wounded and for those treating them (Switzerland).
DocumentedHistoryGeography: SwitzerlandPeriod: 1864
Law & regulation
Henry Dunant's account of the aftermath at Solferino led directly to the 1864 convention protecting the wounded and those treating them. Most of modern international humanitarian law descends from that one agreement.
DocumentedLaw & regulationGeography: International — original signatory statesPeriod: 1864
Common questions
Is 1864 a prime number?
No, 1864 is not prime.
What are the factors of 1864?
The factors of 1864 are 1, 2, 4, 8, 233, 466, 932, 1864.
What is 1864 in Roman numerals?
1864 in Roman numerals is MDCCCLXIV. IV is subtractive: one before five — five minus one. Written additively it would be MDCCCLXIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026