189925900 has 36 divisors (see below), whose sum is σ = 433835080. Its totient is φ = 71971200.

The previous prime is 189925889. The next prime is 189925907. The reversal of 189925900 is 9529981.

It is not an unprimeable number, because it can be changed into a prime (189925907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48081 + ... + 51880.

Almost surely, 2^189925900 is an apocalyptic number.

189925900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189925900 is an abundant number, since it is smaller than the sum of its proper divisors (243909180).

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

189925900 is a wasteful number, since it uses less digits than its factorization.

189925900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99994 (or 99987 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 189925900 is about 13781.3606004632. The cubic root of 189925900 is about 574.8149625147.

The spelling of 189925900 in words is "one hundred eighty-nine million, nine hundred twenty-five thousand, nine hundred".