Fatto generale: 18154 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 18154 is an unremarkable number.
Trivia: 18154 is an uninteresting 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).