Fatto generale: 1188 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1188 is the number of triangles of any size contained in the triangle of side 16 on a triangular grid.
Trivia: 1188 is a boring number.
Data storica: April 2nd is the day in 1902 that Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, St Petersburg.