189111684 has 12 divisors (see below), whose sum is σ = 441260624. Its totient is φ = 63037224.

The previous prime is 189111677. The next prime is 189111709. The reversal of 189111684 is 486111981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×189111684³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7879642 + ... + 7879665.

Almost surely, 2^189111684 is an apocalyptic number.

It is an amenable number.

189111684 is an abundant number, since it is smaller than the sum of its proper divisors (252148940).

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

189111684 is a wasteful number, since it uses less digits than its factorization.

189111684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15759314 (or 15759312 counting only the distinct ones).

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

The square root of 189111684 is about 13751.7883927873. The cubic root of 189111684 is about 573.9923716242.

The spelling of 189111684 in words is "one hundred eighty-nine million, one hundred eleven thousand, six hundred eighty-four".