189151900 has 36 divisors (see below), whose sum is σ = 469098448. Its totient is φ = 64851840.

The previous prime is 189151889. The next prime is 189151903. The reversal of 189151900 is 9151981.

189151900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189151900² = 71556882547220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189151903) 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, 134409 + ... + 135808.

Almost surely, 2^189151900 is an apocalyptic number.

189151900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189151900 is an abundant number, since it is smaller than the sum of its proper divisors (279946548).

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

189151900 is a wasteful number, since it uses less digits than its factorization.

189151900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270238 (or 270231 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 189151900 is about 13753.2505248759. The cubic root of 189151900 is about 574.0330566498.

The spelling of 189151900 in words is "one hundred eighty-nine million, one hundred fifty-one thousand, nine hundred".