188869136 has 10 divisors (see below), whose sum is σ = 365933982. Its totient is φ = 94434560.

The previous prime is 188869129. The next prime is 188869211. The reversal of 188869136 is 631968881.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 111429136 + 77440000 = 10556^2 + 8800^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5902145 + ... + 5902176.

Almost surely, 2^188869136 is an apocalyptic number.

188869136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

188869136 is a deficient number, since it is larger than the sum of its proper divisors (177064846).

188869136 is a wasteful number, since it uses less digits than its factorization.

188869136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11804329 (or 11804323 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 188869136 is about 13742.9667830494. The cubic root of 188869136 is about 573.7468724900.

The spelling of 188869136 in words is "one hundred eighty-eight million, eight hundred sixty-nine thousand, one hundred thirty-six".