189345992 has 16 divisors (see below), whose sum is σ = 387298800. Its totient is φ = 86066320.

The previous prime is 189345979. The next prime is 189346007. The reversal of 189345992 is 299543981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189345992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075742 + ... + 1075917.

It is an arithmetic number, because the mean of its divisors is an integer number (24206175).

Almost surely, 2^189345992 is an apocalyptic number.

It is an amenable number.

189345992 is an abundant number, since it is smaller than the sum of its proper divisors (197952808).

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

189345992 is a wasteful number, since it uses less digits than its factorization.

189345992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151676 (or 2151672 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 189345992 is about 13760.3049384816. The cubic root of 189345992 is about 574.2293312443.

The spelling of 189345992 in words is "one hundred eighty-nine million, three hundred forty-five thousand, nine hundred ninety-two".