189623977472 has 40 divisors (see below), whose sum is σ = 401164531416. Its totient is φ = 89234808832.

The previous prime is 189623977451. The next prime is 189623977483. The reversal of 189623977472 is 274779326981.

It is a junction number, because it is equal to n+sod(n) for n = 189623977399 and 189623977408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10884218 + ... + 10901625.

Almost surely, 2^189623977472 is an apocalyptic number.

It is an amenable number.

189623977472 is an abundant number, since it is smaller than the sum of its proper divisors (211540553944).

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

189623977472 is an equidigital number, since it uses as much as digits as its factorization.

189623977472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21785878 (or 21785862 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 65.

The spelling of 189623977472 in words is "one hundred eighty-nine billion, six hundred twenty-three million, nine hundred seventy-seven thousand, four hundred seventy-two".