188132155 has 16 divisors (see below), whose sum is σ = 228130560. Its totient is φ = 148933728.

The previous prime is 188132143. The next prime is 188132159. The reversal of 188132155 is 551231881.

It is a cyclic number.

It is not a de Polignac number, because 188132155 - 2¹⁹ = 187607867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188132155.

It is not an unprimeable number, because it can be changed into a prime (188132159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292264 + ... + 292906.

It is an arithmetic number, because the mean of its divisors is an integer number (14258160).

Almost surely, 2^188132155 is an apocalyptic number.

188132155 is a deficient number, since it is larger than the sum of its proper divisors (39998405).

188132155 is a wasteful number, since it uses less digits than its factorization.

188132155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170.

The product of its digits is 9600, while the sum is 34.

The square root of 188132155 is about 13716.1275511713. The cubic root of 188132155 is about 572.9996324822. Note that the first 3 decimals are identical.

The spelling of 188132155 in words is "one hundred eighty-eight million, one hundred thirty-two thousand, one hundred fifty-five".