189969672 has 16 divisors (see below), whose sum is σ = 474924240. Its totient is φ = 63323216.

The previous prime is 189969623. The next prime is 189969697. The reversal of 189969672 is 276969981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3957678 + ... + 3957725.

It is an arithmetic number, because the mean of its divisors is an integer number (29682765).

Almost surely, 2^189969672 is an apocalyptic number.

189969672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189969672 is an abundant number, since it is smaller than the sum of its proper divisors (284954568).

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

189969672 is a wasteful number, since it uses less digits than its factorization.

189969672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915412 (or 7915408 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 189969672 is about 13782.9485960008. The cubic root of 189969672 is about 574.8591181001.

The spelling of 189969672 in words is "one hundred eighty-nine million, nine hundred sixty-nine thousand, six hundred seventy-two".