189395262312 has 128 divisors (see below), whose sum is σ = 488283586560. Its totient is φ = 61183745280.

The previous prime is 189395262241. The next prime is 189395262349. The reversal of 189395262312 is 213262593981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95992558 + ... + 95994530.

It is an arithmetic number, because the mean of its divisors is an integer number (3814715520).

Almost surely, 2^189395262312 is an apocalyptic number.

189395262312 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 189395262312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244141793280).

189395262312 is an abundant number, since it is smaller than the sum of its proper divisors (298888324248).

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

189395262312 is a wasteful number, since it uses less digits than its factorization.

189395262312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703 (or 2699 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 189395262312 in words is "one hundred eighty-nine billion, three hundred ninety-five million, two hundred sixty-two thousand, three hundred twelve".