Hecho general: 2165 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 2165 is a boring number.
Trivia: 2165 is an uninteresting number.
Fecha histórica: December 4th is the day in 1745 that Charles Edward Stewart's army reaches Derby, its furthest point during the second Jacobite Rising.