Fatto generale: 19613 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 19613 is an uninteresting number.
Trivia: 19613 is an uninteresting number.
Data storica: September 11th is the day in 1921 that Nahalal, the first moshav in Palestine, is settled as part of a Zionist plan to colonize Palestine and creating a Jewish state, later to be Israel.