Fatto generale: 9519 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 9519 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 9519 is a boring number.
Data storica: January 22nd is the day in 1963 that the Elysée treaty of cooperation between France and Germany is signed by Charles de Gaulle and Konrad Adenauer.