189389383572 has 24 divisors (see below), whose sum is σ = 445819260096. Its totient is φ = 62571123328.

The previous prime is 189389383553. The next prime is 189389383633. The reversal of 189389383572 is 275383983981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69832488 + ... + 69835199.

It is an arithmetic number, because the mean of its divisors is an integer number (18575802504).

Almost surely, 2^189389383572 is an apocalyptic number.

189389383572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189389383572 is an abundant number, since it is smaller than the sum of its proper divisors (256429876524).

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

189389383572 is a wasteful number, since it uses less digits than its factorization.

189389383572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139667807 (or 139667805 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 66.

The spelling of 189389383572 in words is "one hundred eighty-nine billion, three hundred eighty-nine million, three hundred eighty-three thousand, five hundred seventy-two".