• 188 can be written using four 4's:
It is a happy number.
188 is nontrivially palindromic in base 11.
188 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.
188 is an undulating number in base 11.
It is a plaindrome in base 5, base 7, base 9, base 10, base 12, base 13 and base 16.
It is a nialpdrome in base 14 and base 15.
It is a congruent number.
188 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is an amenable number.
188 is a wasteful number, since it uses less digits than its factorization.
188 is an odious number, because the sum of its binary digits is odd.
The square root of 188 is about 13.7113092008. The cubic root of 188 is about 5.7286543160.
Subtracting from 188 its sum of digits (17), we obtain a palindrome (171).
Adding to 188 its product of digits (64), we get a palindrome (252).
The spelling of 188 in words is "one hundred eighty-eight", and thus it is an aban number.