Fatto generale: 16819 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 16819 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 16819 is an unremarkable number.
Data storica: January 17th is the day in 1981 that President of the Philippines Ferdinand Marcos lifts martial law eight years and five months after declaring it.