118118397 has 32 divisors (see below), whose sum is σ = 172160640. Its totient is φ = 71751680.

The previous prime is 118118381. The next prime is 118118437. The reversal of 118118397 is 793811811.

It is a cyclic number.

It is not a de Polignac number, because 118118397 - 2⁴ = 118118381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118118347) 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 in 31 ways as a sum of consecutive naturals, for example, 240322 + ... + 240812.

It is an arithmetic number, because the mean of its divisors is an integer number (5380020).

Almost surely, 2^118118397 is an apocalyptic number.

118118397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

118118397 is a deficient number, since it is larger than the sum of its proper divisors (54042243).

118118397 is a wasteful number, since it uses less digits than its factorization.

118118397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its digits is 12096, while the sum is 39.

The square root of 118118397 is about 10868.2287885377. The cubic root of 118118397 is about 490.6508039872.

The spelling of 118118397 in words is "one hundred eighteen million, one hundred eighteen thousand, three hundred ninety-seven".