118908518397 has 4 divisors (see below), whose sum is σ = 158544691200. Its totient is φ = 79272345596.

The previous prime is 118908518389. The next prime is 118908518411. The reversal of 118908518397 is 793815809811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118908518397 - 2³ = 118908518389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118908518397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118908558397) 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, 19818086397 + ... + 19818086402.

It is an arithmetic number, because the mean of its divisors is an integer number (39636172800).

Almost surely, 2^118908518397 is an apocalyptic number.

It is an amenable number.

118908518397 is a deficient number, since it is larger than the sum of its proper divisors (39636172803).

118908518397 is an equidigital number, since it uses as much as digits as its factorization.

118908518397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39636172802.

The product of its (nonzero) digits is 4354560, while the sum is 60.

The spelling of 118908518397 in words is "one hundred eighteen billion, nine hundred eight million, five hundred eighteen thousand, three hundred ninety-seven".