189930138232 has 16 divisors (see below), whose sum is σ = 356129036640. Its totient is φ = 94962395136.

The previous prime is 189930138193. The next prime is 189930138253. The reversal of 189930138232 is 232831039981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14368 + ... + 616495.

It is an arithmetic number, because the mean of its divisors is an integer number (22258064790).

Almost surely, 2^189930138232 is an apocalyptic number.

It is an amenable number.

189930138232 is a deficient number, since it is larger than the sum of its proper divisors (166198898408).

189930138232 is a wasteful number, since it uses less digits than its factorization.

189930138232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668502 (or 668498 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 189930138232 in words is "one hundred eighty-nine billion, nine hundred thirty million, one hundred thirty-eight thousand, two hundred thirty-two".