189113172 has 48 divisors (see below), whose sum is σ = 452390400. Its totient is φ = 61466080.

The previous prime is 189113161. The next prime is 189113201. The reversal of 189113172 is 271311981.

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 15 ways as a sum of consecutive naturals, for example, 91729 + ... + 93767.

It is an arithmetic number, because the mean of its divisors is an integer number (9424800).

Almost surely, 2^189113172 is an apocalyptic number.

189113172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189113172 is an abundant number, since it is smaller than the sum of its proper divisors (263277228).

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

189113172 is a wasteful number, since it uses less digits than its factorization.

189113172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2234 counting only the distinct ones).

The product of its digits is 3024, while the sum is 33.

The square root of 189113172 is about 13751.8424947350. The cubic root of 189113172 is about 573.9938770810.

The spelling of 189113172 in words is "one hundred eighty-nine million, one hundred thirteen thousand, one hundred seventy-two".