188994057 has 16 divisors (see below), whose sum is σ = 288688512. Its totient is φ = 107735040.

The previous prime is 188994041. The next prime is 188994109. The reversal of 188994057 is 750499881.

It is not a de Polignac number, because 188994057 - 2⁴ = 188994041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188994017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1848 + ... + 19529.

It is an arithmetic number, because the mean of its divisors is an integer number (18043032).

Almost surely, 2^188994057 is an apocalyptic number.

It is an amenable number.

188994057 is a deficient number, since it is larger than the sum of its proper divisors (99694455).

188994057 is a wasteful number, since it uses less digits than its factorization.

188994057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21808.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 188994057 is about 13747.5109383481. The cubic root of 188994057 is about 573.8733396628.

The spelling of 188994057 in words is "one hundred eighty-eight million, nine hundred ninety-four thousand, fifty-seven".