189217054964 has 48 divisors (see below), whose sum is σ = 381753458688. Its totient is φ = 80384345568.

The previous prime is 189217054963. The next prime is 189217054967. The reversal of 189217054964 is 469450712981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189217054963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1693889 + ... + 1802135.

It is an arithmetic number, because the mean of its divisors is an integer number (7953197056).

Almost surely, 2^189217054964 is an apocalyptic number.

189217054964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189217054964 is an abundant number, since it is smaller than the sum of its proper divisors (192536403724).

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

189217054964 is a wasteful number, since it uses less digits than its factorization.

189217054964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108804 (or 108802 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 189217054964 in words is "one hundred eighty-nine billion, two hundred seventeen million, fifty-four thousand, nine hundred sixty-four".