general_fact: 19178 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 19178 is an unremarkable number.
trivia: 19178 is an uninteresting number.
historical_date: July 3rd is the day in 1969 that the biggest explosion in the history of rocketry occurs when the Soviet N-1 rocket explodes and subsequently destroys its launchpad.