189225164928 has 64 divisors (see below), whose sum is σ = 509708704320. Its totient is φ = 62186664960.

The previous prime is 189225164899. The next prime is 189225164929. The reversal of 189225164928 is 829461522981.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (189225164929) 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, 3442975 + ... + 3497502.

It is an arithmetic number, because the mean of its divisors is an integer number (7964198505).

Almost surely, 2^189225164928 is an apocalyptic number.

It is an amenable number.

189225164928 is an abundant number, since it is smaller than the sum of its proper divisors (320483539392).

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

189225164928 is an equidigital number, since it uses as much as digits as its factorization.

189225164928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940565 (or 6940553 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 57.

The spelling of 189225164928 in words is "one hundred eighty-nine billion, two hundred twenty-five million, one hundred sixty-four thousand, nine hundred twenty-eight".