117814918 has 16 divisors (see below), whose sum is σ = 192099600. Its totient is φ = 53866656.

The previous prime is 117814909. The next prime is 117814927. The reversal of 117814918 is 819418711.

It is an interprime number because it is at equal distance from previous prime (117814909) and next prime (117814927).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18393 + ... + 23956.

It is an arithmetic number, because the mean of its divisors is an integer number (12006225).

Almost surely, 2^117814918 is an apocalyptic number.

117814918 is a deficient number, since it is larger than the sum of its proper divisors (74284682).

117814918 is a wasteful number, since it uses less digits than its factorization.

117814918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471.

The product of its digits is 16128, while the sum is 40.

The square root of 117814918 is about 10854.2580584764. The cubic root of 117814918 is about 490.2302374901.

The spelling of 117814918 in words is "one hundred seventeen million, eight hundred fourteen thousand, nine hundred eighteen".