189381108 has 48 divisors (see below), whose sum is σ = 521314304. Its totient is φ = 52362720.

The previous prime is 189381089. The next prime is 189381131. The reversal of 189381108 is 801183981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33760 + ... + 38967.

Almost surely, 2^189381108 is an apocalyptic number.

It is an amenable number.

189381108 is an abundant number, since it is smaller than the sum of its proper divisors (331933196).

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

189381108 is a wasteful number, since it uses less digits than its factorization.

189381108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72772 (or 72770 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 39.

The square root of 189381108 is about 13761.5808684904. The cubic root of 189381108 is about 574.2648277984.

The spelling of 189381108 in words is "one hundred eighty-nine million, three hundred eighty-one thousand, one hundred eight".