117158218 has 12 divisors (see below), whose sum is σ = 185474610. Its totient is φ = 55495656.

The previous prime is 117158201. The next prime is 117158221. The reversal of 117158218 is 812851711.

It can be written as a sum of positive squares in only one way, i.e., 114425809 + 2732409 = 10697^2 + 1653^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80413 + ... + 81856.

Almost surely, 2^117158218 is an apocalyptic number.

117158218 is a deficient number, since it is larger than the sum of its proper divisors (68316392).

117158218 is a wasteful number, since it uses less digits than its factorization.

117158218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162309 (or 162290 counting only the distinct ones).

The product of its digits is 4480, while the sum is 34.

The square root of 117158218 is about 10823.9649851614. The cubic root of 117158218 is about 489.3176925848.

The spelling of 117158218 in words is "one hundred seventeen million, one hundred fifty-eight thousand, two hundred eighteen".