Fatto generale: 18437 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 18437 is an uninteresting number.
Trivia: 18437 is an uninteresting number.
Data storica: June 23rd is the day in 1969 that Warren E. Burger is sworn in as Chief Justice of the United States Supreme Court by retiring Chief Justice Earl Warren.