189584917932 has 48 divisors (see below), whose sum is σ = 468418833792. Its totient is φ = 59473486080.

The previous prime is 189584917861. The next prime is 189584917939. The reversal of 189584917932 is 239719485981.

It is a super-2 number, since 2×189584917932² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189584917939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4387143 + ... + 4430145.

It is an arithmetic number, because the mean of its divisors is an integer number (9758725704).

Almost surely, 2^189584917932 is an apocalyptic number.

189584917932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189584917932 is an abundant number, since it is smaller than the sum of its proper divisors (278833915860).

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

189584917932 is a wasteful number, since it uses less digits than its factorization.

189584917932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64638 (or 64636 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 66.

The spelling of 189584917932 in words is "one hundred eighty-nine billion, five hundred eighty-four million, nine hundred seventeen thousand, nine hundred thirty-two".