1816
1816 is the year without a summer.
- Even
- Composite
Where 1816 fits
Why 1816 is special
The eruption of Tambora the previous year cooled the northern hemisphere enough to cause crop failure and famine. The same weather kept Mary Shelley indoors in Switzerland, where she wrote Frankenstein.
Factors & digit properties
- Divisors (8)
- 1, 2, 4, 8, 227, 454, 908, 1816
- Prime factorisation
- 2^3 × 227
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1816
- Binary
- 11100011000
- Octal
- 3430
- Hexadecimal
- 718
- Roman numeral
- MDCCCXVI
- Scientific notation
- 1.816 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
The weather that failed harvests across the northern hemisphere in 1816 also kept a party indoors by Lake Geneva, where Frankenstein was written and published two years later.
View 1818 →Other connections
- developed from1818
why?
Strength 0.50, confidence "high".
Science
Tambora's 1815 eruption cooled the globe enough to fail harvests across the northern hemisphere in 1816. The unrelenting rain that summer also kept a party of writers indoors by Lake Geneva, which is how Frankenstein was written.
DocumentedSciencePeriod: 1816
Common questions
Is 1816 a prime number?
No, 1816 is not prime.
What are the factors of 1816?
The factors of 1816 are 1, 2, 4, 8, 227, 454, 908, 1816.
What is 1816 in Roman numerals?
1816 in Roman numerals is MDCCCXVI.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026