Fatto matematico: 9182 is a value of n for which 4n and 5n together use each digit exactly once.
Trivia: 9182 is an unremarkable number.
Data storica: February 19th is the day in 197 that Emperor Septimius Severus defeats usurper Clodius Albinus in the Battle of Lugdunum, the bloodiest battle between Roman armies.