Fait général: 2190 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2190 is an unremarkable number.
Culture générale: 2190 is a boring number.
Date historique: December 29th is the day in 1949 that KC2XAK of Bridgeport, Connecticut becomes the first Ultra high frequency (UHF) television station to operate a daily schedule.