189111084 has 24 divisors (see below), whose sum is σ = 441530880. Its totient is φ = 62998224.

The previous prime is 189111073. The next prime is 189111121. The reversal of 189111084 is 480111981.

189111084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20937 + ... + 28575.

It is an arithmetic number, because the mean of its divisors is an integer number (18397120).

Almost surely, 2^189111084 is an apocalyptic number.

It is an amenable number.

189111084 is an abundant number, since it is smaller than the sum of its proper divisors (252419796).

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

189111084 is a wasteful number, since it uses less digits than its factorization.

189111084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709 (or 9707 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 33.

The square root of 189111084 is about 13751.7665774256. The cubic root of 189111084 is about 573.9917645830.

The spelling of 189111084 in words is "one hundred eighty-nine million, one hundred eleven thousand, eighty-four".