188900156 has 12 divisors (see below), whose sum is σ = 331640400. Its totient is φ = 94145760.

The previous prime is 188900149. The next prime is 188900177. The reversal of 188900156 is 651009881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74681 + ... + 77168.

It is an arithmetic number, because the mean of its divisors is an integer number (27636700).

Almost surely, 2^188900156 is an apocalyptic number.

It is an amenable number.

188900156 is a deficient number, since it is larger than the sum of its proper divisors (142740244).

188900156 is a wasteful number, since it uses less digits than its factorization.

188900156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152164 (or 152162 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 188900156 is about 13744.0953139885. The cubic root of 188900156 is about 573.7782816341.

The spelling of 188900156 in words is "one hundred eighty-eight million, nine hundred thousand, one hundred fifty-six".