189542795628588 has 12 divisors (see below), whose sum is σ = 442266523133400. Its totient is φ = 63180931876192.

The previous prime is 189542795628583. The next prime is 189542795628611. The reversal of 189542795628588 is 885826597245981.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (189542795628583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7897616484513 + ... + 7897616484536.

It is an arithmetic number, because the mean of its divisors is an integer number (36855543594450).

Almost surely, 2^{189542795628588} is an apocalyptic number.

It is an amenable number.

189542795628588 is an abundant number, since it is smaller than the sum of its proper divisors (252723727504812).

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

189542795628588 is a wasteful number, since it uses less digits than its factorization.

189542795628588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15795232969056 (or 15795232969054 counting only the distinct ones).

The product of its digits is 27869184000, while the sum is 87.

The spelling of 189542795628588 in words is "one hundred eighty-nine trillion, five hundred forty-two billion, seven hundred ninety-five million, six hundred twenty-eight thousand, five hundred eighty-eight".