General fact: 19905 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 19905 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 19905 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: June 30th is the day in 1882 that Charles J. Guiteau is hanged in Washington, D.C. for the assassination of U.S. President James Garfield.