188538892 has 6 divisors (see below), whose sum is σ = 329943068. Its totient is φ = 94269444.

The previous prime is 188538887. The next prime is 188538893. The reversal of 188538892 is 298835881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (188538893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23567358 + ... + 23567365.

Almost surely, 2^188538892 is an apocalyptic number.

It is an amenable number.

188538892 is a deficient number, since it is larger than the sum of its proper divisors (141404176).

188538892 is a wasteful number, since it uses less digits than its factorization.

188538892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47134727 (or 47134725 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 52.

The square root of 188538892 is about 13730.9465077976. The cubic root of 188538892 is about 573.4122721968.

The spelling of 188538892 in words is "one hundred eighty-eight million, five hundred thirty-eight thousand, eight hundred ninety-two".