As in .....1 + 8 + 2 + 8 = 19.................10 negative 19s..............equal positive, equal negative...............equates to zero.........................


It repeats.......twice...........as does 14.......in the square root of 2.........1828...............those four numbers..................taken separately.................added together...........add up to 19...................

e (Euler's Number)

The number e is a famous irrational number, and is one of the most important numbers in mathematics.
The first few digits are:

2.7182818284590452353602874713527 (and more ...)

It is often called Euler's number after Leonhard Euler.
And Euler is spoken like "Oiler"