115218959 has 2 divisors, whose sum is σ = 115218960. Its totient is φ = 115218958.

The previous prime is 115218953. The next prime is 115218977. The reversal of 115218959 is 959812511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115218959 - 2²⁰ = 114170383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115218953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57609479 + 57609480.

It is an arithmetic number, because the mean of its divisors is an integer number (57609480).

Almost surely, 2^115218959 is an apocalyptic number.

115218959 is a deficient number, since it is larger than the sum of its proper divisors (1).

115218959 is an equidigital number, since it uses as much as digits as its factorization.

115218959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 41.

The square root of 115218959 is about 10734.0094559302. The cubic root of 115218959 is about 486.6028508825.

The spelling of 115218959 in words is "one hundred fifteen million, two hundred eighteen thousand, nine hundred fifty-nine".