189791112 has 48 divisors (see below), whose sum is σ = 551946960. Its totient is φ = 54225696.

The previous prime is 189791099. The next prime is 189791153. The reversal of 189791112 is 211197981.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 79518 + ... + 81869.

It is an arithmetic number, because the mean of its divisors is an integer number (11498895).

Almost surely, 2^189791112 is an apocalyptic number.

189791112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189791112 is an abundant number, since it is smaller than the sum of its proper divisors (362155848).

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

189791112 is a wasteful number, since it uses less digits than its factorization.

189791112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161410 (or 161399 counting only the distinct ones).

The product of its digits is 9072, while the sum is 39.

The square root of 189791112 is about 13776.4695041945. The cubic root of 189791112 is about 574.6789507073.

The spelling of 189791112 in words is "one hundred eighty-nine million, seven hundred ninety-one thousand, one hundred twelve".