1738
The Moon's radius is about 1,738 km.
- Even
- Composite
Where 1738 fits
Why 1738 is special
That is close to a quarter of Earth's, which is unusually large for a moon relative to its planet. The size is why the Moon stabilises Earth's axial tilt, and therefore why the seasons have stayed roughly constant over geological time.
Same number, different meanings
How 1738 is understood across different contexts — never implying one meaning because of another.
- Mathematics
That is close to a quarter of Earth's, which is unusually large for a moon relative to its planet. The size is why the Moon stabilises Earth's axial tilt, and therefore why the seasons have stayed roughly constant over geological time.
- History
In 1738, Daniel Bernoulli published Hydrodynamica, relating the speed of a fluid to its pressure (Switzerland).
- Science
The Moon's radius is roughly a quarter of Earth's, exceptionally large relative to its planet. That mass is what stabilises Earth's axial tilt, and therefore why the seasons have remained roughly constant over geological time rather than wandering.
1738 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 11, 22, 79, 158, 869, 1738
- Prime factorisation
- 2 × 11 × 79
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1738
- Scientific notation
- 1.738 × 10^3
Roman numerals
M D C C X X X V I I I
Binary
1 1 0 1 1 0 0 1 0 1 0
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,738
Octal
3 3 1 2
3 × 512 + 3 × 64 + 1 × 8 + 2 × 1 = 1,738
Hexadecimal
6 c a
6 × 256 + c × 16 + a × 1 = 1,738
Read as powers of two: 1,024 + 512 + 128 + 64 + 8 + 2 = 1,738.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 3 hobbles, 8 strokes
1 × 1,000 + 7 × 100 + 3 × 10 + 8 × 1 = 1,738. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 8 vertical wedges (sixties place), 5 corner wedges + 8 vertical wedges (units place)
28 × 60 + 58 = 1738. 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
The Moon's radius is roughly a quarter of Earth's. That ratio is what makes the Moon massive enough to stabilise Earth's axial tilt over geological time.
View 6378 →1738 is a year in the 18th century, in the 1730s.
History
In 1738, Daniel Bernoulli published Hydrodynamica, relating the speed of a fluid to its pressure (Switzerland).
DocumentedHistoryGeography: SwitzerlandPeriod: 1738
Science
The Moon's radius is roughly a quarter of Earth's, exceptionally large relative to its planet. That mass is what stabilises Earth's axial tilt, and therefore why the seasons have remained roughly constant over geological time rather than wandering.
DocumentedScience
Common questions
Is 1738 a prime number?
No, 1738 is not prime.
What are the factors of 1738?
The factors of 1738 are 1, 2, 11, 22, 79, 158, 869, 1738.
What is 1738 in Roman numerals?
1738 in Roman numerals is MDCCXXXVIII.
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