189008136 has 48 divisors (see below), whose sum is σ = 525739500. Its totient is φ = 61299072.

The previous prime is 189008111. The next prime is 189008153. The reversal of 189008136 is 631800981.

It can be written as a sum of positive squares in 2 ways, for example, as 166255236 + 22752900 = 12894^2 + 4770^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 189008136.

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, 32811 + ... + 38138.

Almost surely, 2^189008136 is an apocalyptic number.

It is an amenable number.

189008136 is an abundant number, since it is smaller than the sum of its proper divisors (336731364).

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

189008136 is a wasteful number, since it uses less digits than its factorization.

189008136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70998 (or 70991 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 189008136 is about 13748.0229851423. The cubic root of 189008136 is about 573.8875894268.

The spelling of 189008136 in words is "one hundred eighty-nine million, eight thousand, one hundred thirty-six".