189968892 has 12 divisors (see below), whose sum is σ = 443260776. Its totient is φ = 63322960.

The previous prime is 189968887. The next prime is 189968893. The reversal of 189968892 is 298869981.

189968892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189968893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7915359 + ... + 7915382.

It is an arithmetic number, because the mean of its divisors is an integer number (36938398).

Almost surely, 2^189968892 is an apocalyptic number.

189968892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189968892 is an abundant number, since it is smaller than the sum of its proper divisors (253291884).

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

189968892 is a wasteful number, since it uses less digits than its factorization.

189968892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830748 (or 15830746 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 60.

The square root of 189968892 is about 13782.9203001396. The cubic root of 189968892 is about 574.8583313241.

The spelling of 189968892 in words is "one hundred eighty-nine million, nine hundred sixty-eight thousand, eight hundred ninety-two".