1858
1858 is the year of the Great Stink in London.
- Even
- Composite
Where 1858 fits
Why 1858 is special
Sewage in the Thames became unbearable in the summer heat, and parliament — sitting beside it — funded a sewer system within eighteen days. Public health investment followed discomfort to legislators rather than the death toll of earlier epidemics.
Factors & digit properties
- Divisors (4)
- 1, 2, 929, 1858
- Prime factorisation
- 2 × 929
- Digit sum
- 22
- Digital root
- 4
Representations
- Decimal
- 1858
- Binary
- 11101000010
- Octal
- 3502
- Hexadecimal
- 742
- Roman numeral
- MDCCCLVIII
- Scientific notation
- 1.858 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
John Snow showed cholera was waterborne in 1854 and was largely ignored; the smell of the Thames reaching parliament in 1858 produced a funded sewer system within eighteen days.
View 1854 →Law & regulation
Cholera epidemics had killed tens of thousands without producing a sewer system. The smell reaching the Palace of Westminster in 1858 produced funding in under three weeks, which is a well-documented illustration of whose discomfort moves policy.
DocumentedLaw & regulationGeography: London, EnglandPeriod: 1858
Common questions
Is 1858 a prime number?
No, 1858 is not prime.
What are the factors of 1858?
The factors of 1858 are 1, 2, 929, 1858.
What is 1858 in Roman numerals?
1858 in Roman numerals is MDCCCLVIII.
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