189287645232 has 160 divisors (see below), whose sum is σ = 588651212800. Its totient is φ = 52337456640.

The previous prime is 189287645167. The next prime is 189287645233. The reversal of 189287645232 is 232546782981.

It is not an unprimeable number, because it can be changed into a prime (189287645233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324948 + ... + 695820.

It is an arithmetic number, because the mean of its divisors is an integer number (3679070080).

Almost surely, 2^189287645232 is an apocalyptic number.

189287645232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189287645232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294325606400).

189287645232 is an abundant number, since it is smaller than the sum of its proper divisors (399363567568).

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

189287645232 is a wasteful number, since it uses less digits than its factorization.

189287645232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370936 (or 370916 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 189287645232 in words is "one hundred eighty-nine billion, two hundred eighty-seven million, six hundred forty-five thousand, two hundred thirty-two".