Fatto generale: 1837 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1837 is a value of n for which 2n and 7n together use the digits 1-9 exactly once.
Trivia: 1837 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 10th is the day in 1863 that the London Underground, the world's oldest underground railway, opens between London Paddington station and Farringdon station.