189429992 has 16 divisors (see below), whose sum is σ = 359678400. Its totient is φ = 93515760.

The previous prime is 189429967. The next prime is 189430009. The reversal of 189429992 is 299924981.

189429992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 149234 + ... + 150497.

It is an arithmetic number, because the mean of its divisors is an integer number (22479900).

Almost surely, 2^189429992 is an apocalyptic number.

It is an amenable number.

189429992 is a deficient number, since it is larger than the sum of its proper divisors (170248408).

189429992 is a wasteful number, since it uses less digits than its factorization.

189429992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299816 (or 299812 counting only the distinct ones).

The product of its digits is 839808, while the sum is 53.

The square root of 189429992 is about 13763.3568579762. The cubic root of 189429992 is about 574.3142342520.

The spelling of 189429992 in words is "one hundred eighty-nine million, four hundred twenty-nine thousand, nine hundred ninety-two".