189464676920 has 32 divisors (see below), whose sum is σ = 426318664320. Its totient is φ = 75781756800.

The previous prime is 189464676899. The next prime is 189464676931. The reversal of 189464676920 is 29676464981.

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, 680345 + ... + 917495.

It is an arithmetic number, because the mean of its divisors is an integer number (13322458260).

Almost surely, 2^189464676920 is an apocalyptic number.

189464676920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189464676920 is an abundant number, since it is smaller than the sum of its proper divisors (236853987400).

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

189464676920 is a wasteful number, since it uses less digits than its factorization.

189464676920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257135 (or 257131 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 189464676920 in words is "one hundred eighty-nine billion, four hundred sixty-four million, six hundred seventy-six thousand, nine hundred twenty".