115989158 has 8 divisors (see below), whose sum is σ = 174261360. Its totient is φ = 57902040.

The previous prime is 115989157. The next prime is 115989169. The reversal of 115989158 is 851989511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115989157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44693 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (21782670).

Almost surely, 2^115989158 is an apocalyptic number.

115989158 is a deficient number, since it is larger than the sum of its proper divisors (58272202).

115989158 is an equidigital number, since it uses as much as digits as its factorization.

115989158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92542.

The product of its digits is 129600, while the sum is 47.

The square root of 115989158 is about 10769.8262752934. The cubic root of 115989158 is about 487.6847012596.

The spelling of 115989158 in words is "one hundred fifteen million, nine hundred eighty-nine thousand, one hundred fifty-eight".