115189189 has 16 divisors (see below), whose sum is σ = 121881600. Its totient is φ = 108710784.

The previous prime is 115189183. The next prime is 115189219. The reversal of 115189189 is 981981511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 115189189 - 2¹³ = 115180997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115189183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313684 + ... + 314050.

It is an arithmetic number, because the mean of its divisors is an integer number (7617600).

Almost surely, 2^115189189 is an apocalyptic number.

It is an amenable number.

115189189 is a deficient number, since it is larger than the sum of its proper divisors (6692411).

115189189 is a wasteful number, since it uses less digits than its factorization.

115189189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 25920, while the sum is 43.

The square root of 115189189 is about 10732.6226524555. The cubic root of 115189189 is about 486.5609381776.

The spelling of 115189189 in words is "one hundred fifteen million, one hundred eighty-nine thousand, one hundred eighty-nine".