189186330912 has 48 divisors (see below), whose sum is σ = 496928234880. Its totient is φ = 63022222592.

The previous prime is 189186330899. The next prime is 189186330913. The reversal of 189186330912 is 219033681981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (189186330913) 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, 470487 + ... + 774422.

It is an arithmetic number, because the mean of its divisors is an integer number (10352671560).

Almost surely, 2^189186330912 is an apocalyptic number.

189186330912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189186330912 is an abundant number, since it is smaller than the sum of its proper divisors (307741903968).

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

189186330912 is a wasteful number, since it uses less digits than its factorization.

189186330912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246505 (or 1246497 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 189186330912 in words is "one hundred eighty-nine billion, one hundred eighty-six million, three hundred thirty thousand, nine hundred twelve".