117808918 has 8 divisors (see below), whose sum is σ = 177690240. Its totient is φ = 58578840.

The previous prime is 117808871. The next prime is 117808939. The reversal of 117808918 is 819808711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162358 + ... + 163081.

It is an arithmetic number, because the mean of its divisors is an integer number (22211280).

Almost surely, 2^117808918 is an apocalyptic number.

117808918 is a deficient number, since it is larger than the sum of its proper divisors (59881322).

117808918 is a wasteful number, since it uses less digits than its factorization.

117808918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325622.

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 117808918 is about 10853.9816657299. The cubic root of 117808918 is about 490.2219153087.

The spelling of 117808918 in words is "one hundred seventeen million, eight hundred eight thousand, nine hundred eighteen".