118397957 has 4 divisors (see below), whose sum is σ = 119570316. Its totient is φ = 117225600.

The previous prime is 118397941. The next prime is 118397969. The reversal of 118397957 is 759793811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106523041 + 11874916 = 10321^2 + 3446^2 .

It is a cyclic number.

It is not a de Polignac number, because 118397957 - 2⁴ = 118397941 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 (118397977) 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, 586028 + ... + 586229.

It is an arithmetic number, because the mean of its divisors is an integer number (29892579).

Almost surely, 2^118397957 is an apocalyptic number.

It is an amenable number.

118397957 is a deficient number, since it is larger than the sum of its proper divisors (1172359).

118397957 is a wasteful number, since it uses less digits than its factorization.

118397957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172358.

The product of its digits is 476280, while the sum is 50.

The square root of 118397957 is about 10881.0825288663. The cubic root of 118397957 is about 491.0375861488.

The spelling of 118397957 in words is "one hundred eighteen million, three hundred ninety-seven thousand, nine hundred fifty-seven".