189668892 has 48 divisors (see below), whose sum is σ = 512728832. Its totient is φ = 53447040.

The previous prime is 189668851. The next prime is 189668909. The reversal of 189668892 is 298866981.

189668892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9334 + ... + 21597.

Almost surely, 2^189668892 is an apocalyptic number.

189668892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189668892 is an abundant number, since it is smaller than the sum of its proper divisors (323059940).

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

189668892 is a wasteful number, since it uses less digits than its factorization.

189668892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31018 (or 31016 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 57.

The square root of 189668892 is about 13772.0329653977. The cubic root of 189668892 is about 574.5555653303. Note that the first 4 decimals are identical.

The spelling of 189668892 in words is "one hundred eighty-nine million, six hundred sixty-eight thousand, eight hundred ninety-two".