189695172 has 48 divisors (see below), whose sum is σ = 454265280. Its totient is φ = 61590528.

The previous prime is 189695171. The next prime is 189695213. The reversal of 189695172 is 271596981.

It is not an unprimeable number, because it can be changed into a prime (189695171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71404 + ... + 74012.

It is an arithmetic number, because the mean of its divisors is an integer number (9463860).

Almost surely, 2^189695172 is an apocalyptic number.

189695172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189695172 is an abundant number, since it is smaller than the sum of its proper divisors (264570108).

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

189695172 is a wasteful number, since it uses less digits than its factorization.

189695172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772 (or 2770 counting only the distinct ones).

The product of its digits is 272160, while the sum is 48.

The square root of 189695172 is about 13772.9870398545. The cubic root of 189695172 is about 574.5821003845.

The spelling of 189695172 in words is "one hundred eighty-nine million, six hundred ninety-five thousand, one hundred seventy-two".