118715897 has 2 divisors, whose sum is σ = 118715898. Its totient is φ = 118715896.

The previous prime is 118715881. The next prime is 118715911. The reversal of 118715897 is 798517811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95570176 + 23145721 = 9776^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 118715897 - 2⁴ = 118715881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118715867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59357948 + 59357949.

It is an arithmetic number, because the mean of its divisors is an integer number (59357949).

Almost surely, 2^118715897 is an apocalyptic number.

It is an amenable number.

118715897 is a deficient number, since it is larger than the sum of its proper divisors (1).

118715897 is an equidigital number, since it uses as much as digits as its factorization.

118715897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 47.

The square root of 118715897 is about 10895.6824935384. The cubic root of 118715897 is about 491.4767292898.

The spelling of 118715897 in words is "one hundred eighteen million, seven hundred fifteen thousand, eight hundred ninety-seven".