Fatto matematico: 8189 is the index of a triangular number containing only 3 different digits.
Trivia: 8189 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 2nd is the day in 1990 that the Lower Ohio Valley tornado outbreak spawns 66 confirmed tornadoes in Illinois, Indiana, Kentucky, and Ohio, killing 12.