int to a
String representing the english words for said number.
1 -> one 25 -> twenty-five 857 -> eight hundred fifty-seven 43021 -> forty-three thousand twenty-one
Install the package then simply call
var num = 954; var numberAsString = DigitToWord.translate(num); print(numberAsString) /// nine hundred fifty-four
Note: This package maxes out at 9223372036854775807. This is the largest integer that can be represented by 64 bits.