189078468885 has 96 divisors (see below), whose sum is σ = 362901547008. Its totient is φ = 94213627200.

The previous prime is 189078468877. The next prime is 189078468961. The reversal of 189078468885 is 588864870981.

189078468885 is a `hidden beast` number, since 1 + 8 + 90 + 78 + 468 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 189078468885 - 2³ = 189078468877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1122960 + ... + 1280310.

It is an arithmetic number, because the mean of its divisors is an integer number (3780224448).

Almost surely, 2^189078468885 is an apocalyptic number.

189078468885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189078468885 is a deficient number, since it is larger than the sum of its proper divisors (173823078123).

189078468885 is a wasteful number, since it uses less digits than its factorization.

189078468885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157437 (or 157425 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 72.

The spelling of 189078468885 in words is "one hundred eighty-nine billion, seventy-eight million, four hundred sixty-eight thousand, eight hundred eighty-five".