189715008 has 56 divisors (see below), whose sum is σ = 573666112. Its totient is φ = 54203904.

The previous prime is 189715003. The next prime is 189715027. The reversal of 189715008 is 800517981.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (189715003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69235 + ... + 71922.

Almost surely, 2^189715008 is an apocalyptic number.

It is an amenable number.

189715008 is an abundant number, since it is smaller than the sum of its proper divisors (383951104).

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

189715008 is a wasteful number, since it uses less digits than its factorization.

189715008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141179 (or 141169 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 189715008 is about 13773.7071262605. The cubic root of 189715008 is about 574.6021272749.

The spelling of 189715008 in words is "one hundred eighty-nine million, seven hundred fifteen thousand, eight".