117317918 has 16 divisors (see below), whose sum is σ = 186773040. Its totient is φ = 55076736.

The previous prime is 117317909. The next prime is 117317929. The reversal of 117317918 is 819713711.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11168 + ... + 18956.

It is an arithmetic number, because the mean of its divisors is an integer number (11673315).

Almost surely, 2^117317918 is an apocalyptic number.

117317918 is a deficient number, since it is larger than the sum of its proper divisors (69455122).

117317918 is a wasteful number, since it uses less digits than its factorization.

117317918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8251.

The product of its digits is 10584, while the sum is 38.

The square root of 117317918 is about 10831.3396216719. The cubic root of 117317918 is about 489.5399235624.

It can be divided in two parts, 1173 and 17918, that added together give a palindrome (19091).

The spelling of 117317918 in words is "one hundred seventeen million, three hundred seventeen thousand, nine hundred eighteen".