188656897 has 12 divisors (see below), whose sum is σ = 222858864. Its totient is φ = 158311920.

The previous prime is 188656891. The next prime is 188656901. The reversal of 188656897 is 798656881.

188656897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 188656897 - 2²⁷ = 54439169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188656891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48883 + ... + 52600.

It is an arithmetic number, because the mean of its divisors is an integer number (18571572).

Almost surely, 2^188656897 is an apocalyptic number.

It is an amenable number.

188656897 is a deficient number, since it is larger than the sum of its proper divisors (34201967).

188656897 is a wasteful number, since it uses less digits than its factorization.

188656897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101520 (or 101507 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 58.

The square root of 188656897 is about 13735.2428809978. The cubic root of 188656897 is about 573.5318786473.

The spelling of 188656897 in words is "one hundred eighty-eight million, six hundred fifty-six thousand, eight hundred ninety-seven".