Fatto matematico: 4819 is a Tetranacci-like number starting from 1, 1, 1, and 1.
Trivia: 4819 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: March 11th is the day in 222 that Emperor Elagabalus is assassinated, along with his mother, Julia Soaemias, by the Praetorian Guard during a revolt.