Hecho general: 18985 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 18985 is an uninteresting number.
Trivia: 18985 is an unremarkable number.
Fecha histórica: December 23rd is the day in 1913 that the Federal Reserve Act is signed into law by President Woodrow Wilson, creating the Federal Reserve.