189656900 has 36 divisors (see below), whose sum is σ = 417712848. Its totient is φ = 74727840.

The previous prime is 189656893. The next prime is 189656941. The reversal of 189656900 is 9656981.

It is a super-2 number, since 2×189656900² = 71939479435220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7454 + ... + 20853.

Almost surely, 2^189656900 is an apocalyptic number.

189656900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189656900 is an abundant number, since it is smaller than the sum of its proper divisors (228055948).

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

189656900 is a wasteful number, since it uses less digits than its factorization.

189656900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28388 (or 28381 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 189656900 is about 13771.5975834324. The cubic root of 189656900 is about 574.5434561305.

The spelling of 189656900 in words is "one hundred eighty-nine million, six hundred fifty-six thousand, nine hundred".