189665822836 has 36 divisors (see below), whose sum is σ = 402957855328. Its totient is φ = 76503858048.

The previous prime is 189665822809. The next prime is 189665822849. The reversal of 189665822836 is 638228566981.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11711250 + ... + 11727433.

Almost surely, 2^189665822836 is an apocalyptic number.

It is an amenable number.

189665822836 is an abundant number, since it is smaller than the sum of its proper divisors (213292032492).

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

189665822836 is a wasteful number, since it uses less digits than its factorization.

189665822836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23438728 (or 23438709 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

The spelling of 189665822836 in words is "one hundred eighty-nine billion, six hundred sixty-five million, eight hundred twenty-two thousand, eight hundred thirty-six".