Fatto generale: 8189 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 8189 is the index of a triangular number containing only 3 different digits.
Trivia: 8189 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 2nd is the day in 1910 that Charles Rolls, co-founder of Rolls-Royce Limited, becomes the first man to make a non-stop double crossing of the English Channel by plane.