118215959 has 2 divisors, whose sum is σ = 118215960. Its totient is φ = 118215958.

The previous prime is 118215953. The next prime is 118215971. The reversal of 118215959 is 959512811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118215959 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118215953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59107979 + 59107980.

It is an arithmetic number, because the mean of its divisors is an integer number (59107980).

Almost surely, 2^118215959 is an apocalyptic number.

118215959 is a deficient number, since it is larger than the sum of its proper divisors (1).

118215959 is an equidigital number, since it uses as much as digits as its factorization.

118215959 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 118215959 is about 10872.7162659567. The cubic root of 118215959 is about 490.7858540771.

The spelling of 118215959 in words is "one hundred eighteen million, two hundred fifteen thousand, nine hundred fifty-nine".