188191056 has 40 divisors (see below), whose sum is σ = 486843840. Its totient is φ = 62642176.

The previous prime is 188191027. The next prime is 188191093. The reversal of 188191056 is 650191881.

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 7 ways as a sum of consecutive naturals, for example, 37936 + ... + 42608.

It is an arithmetic number, because the mean of its divisors is an integer number (12171096).

Almost surely, 2^188191056 is an apocalyptic number.

188191056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

188191056 is an abundant number, since it is smaller than the sum of its proper divisors (298652784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188191056 is a wasteful number, since it uses less digits than its factorization.

188191056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 39.

The square root of 188191056 is about 13718.2745270679. The cubic root of 188191056 is about 573.0594250781.

The spelling of 188191056 in words is "one hundred eighty-eight million, one hundred ninety-one thousand, fifty-six".