189179770452 has 24 divisors (see below), whose sum is σ = 442753067232. Its totient is φ = 62869408800.

The previous prime is 189179770427. The next prime is 189179770457. The reversal of 189179770452 is 254077971981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189179770457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23810199 + ... + 23818142.

It is an arithmetic number, because the mean of its divisors is an integer number (18448044468).

Almost surely, 2^189179770452 is an apocalyptic number.

189179770452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189179770452 is an abundant number, since it is smaller than the sum of its proper divisors (253573296780).

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

189179770452 is a wasteful number, since it uses less digits than its factorization.

189179770452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47628679 (or 47628677 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 60.

The spelling of 189179770452 in words is "one hundred eighty-nine billion, one hundred seventy-nine million, seven hundred seventy thousand, four hundred fifty-two".