Fatto generale: 19980 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 19980 is a boring number.
Trivia: 19980 is an unremarkable number.
Data storica: September 13th is the day in 1979 that South Africa grants independence to the "homeland" of Venda (not recognised outside South Africa).