115689189 has 32 divisors (see below), whose sum is σ = 193950720. Its totient is φ = 60083760.

The previous prime is 115689173. The next prime is 115689193. The reversal of 115689189 is 981986511.

It is not a de Polignac number, because 115689189 - 2⁴ = 115689173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115689109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25882 + ... + 30020.

It is an arithmetic number, because the mean of its divisors is an integer number (6060960).

Almost surely, 2^115689189 is an apocalyptic number.

It is an amenable number.

115689189 is a deficient number, since it is larger than the sum of its proper divisors (78261531).

115689189 is an equidigital number, since it uses as much as digits as its factorization.

115689189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182 (or 4160 counting only the distinct ones).

The product of its digits is 155520, while the sum is 48.

The square root of 115689189 is about 10755.8908975500. The cubic root of 115689189 is about 487.2639246190.

The spelling of 115689189 in words is "one hundred fifteen million, six hundred eighty-nine thousand, one hundred eighty-nine".