189555136 has 112 divisors (see below), whose sum is σ = 414771840. Its totient is φ = 85729280.

The previous prime is 189555131. The next prime is 189555139. The reversal of 189555136 is 631555981.

It is a super-2 number, since 2×189555136² = 71862299167956992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189555092 and 189555101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189555131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3576486 + ... + 3576538.

It is an arithmetic number, because the mean of its divisors is an integer number (3703320).

Almost surely, 2^189555136 is an apocalyptic number.

189555136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189555136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207385920).

189555136 is an abundant number, since it is smaller than the sum of its proper divisors (225216704).

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

189555136 is a wasteful number, since it uses less digits than its factorization.

189555136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 172 counting only the distinct ones).

The product of its digits is 162000, while the sum is 43.

The square root of 189555136 is about 13767.9023819898. The cubic root of 189555136 is about 574.4406770230.

The spelling of 189555136 in words is "one hundred eighty-nine million, five hundred fifty-five thousand, one hundred thirty-six".