189687108 has 48 divisors (see below), whose sum is σ = 501744320. Its totient is φ = 55292544.

The previous prime is 189687103. The next prime is 189687119. The reversal of 189687108 is 801786981.

It is not an unprimeable number, because it can be changed into a prime (189687103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29035 + ... + 34962.

Almost surely, 2^189687108 is an apocalyptic number.

It is an amenable number.

189687108 is an abundant number, since it is smaller than the sum of its proper divisors (312057212).

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

189687108 is a wasteful number, since it uses less digits than its factorization.

189687108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64036 (or 64034 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 48.

The square root of 189687108 is about 13772.6942897895. The cubic root of 189687108 is about 574.5739583819.

The spelling of 189687108 in words is "one hundred eighty-nine million, six hundred eighty-seven thousand, one hundred eight".