Fatto generale: 1907 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1907 is a value of n for which n (n+2) is a palindrome.
Trivia: 1907 is a boring number.
Data storica: March 21st is the day in 1919 that the Hungarian Soviet Republic is established becoming the first Communist government to be formed in Europe after the October Revolution in Russia.