1890
1890 is the year of the Sherman Antitrust Act.
- Even
- Composite
Where 1890 fits
Why 1890 is special
It made agreements restraining trade illegal in the United States and was first used extensively against labour unions rather than corporations. Laws are shaped by who enforces them.
Factors & digit properties
- Divisors (32)
- 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890
- Prime factorisation
- 2 × 3^3 × 5 × 7
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 1890
- Binary
- 11101100010
- Octal
- 3542
- Hexadecimal
- 762
- Roman numeral
- MDCCCXC
- Scientific notation
- 1.890 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
The Sherman Act of 1890 was written against industrial trusts and used first against unions; the 1911 Standard Oil breakup finally applied it as intended.
View 1911 →Other connections
- contrasts with1911
why?
Strength 0.50, confidence "high".
Law & regulation
The Sherman Act was written against industrial trusts and its early application fell heavily on labour organising, which courts treated as a restraint of trade. The gap between a statute's target and its use is the durable lesson.
DocumentedLaw & regulationGeography: United StatesPeriod: 1890
Common questions
Is 1890 a prime number?
No, 1890 is not prime.
What are the factors of 1890?
The factors of 1890 are 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890.
What is 1890 in Roman numerals?
1890 in Roman numerals is MDCCCXC.
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