117818199 has 8 divisors (see below), whose sum is σ = 174545520. Its totient is φ = 78545448.

The previous prime is 117818189. The next prime is 117818243. The reversal of 117818199 is 991818711.

It is not a de Polignac number, because 117818199 - 2²⁰ = 116769623 is a prime.

It is a super-2 number, since 2×117818199² = 27762256031207202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117818179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181792 + ... + 2181845.

It is an arithmetic number, because the mean of its divisors is an integer number (21818190).

Almost surely, 2^117818199 is an apocalyptic number.

117818199 is a deficient number, since it is larger than the sum of its proper divisors (56727321).

117818199 is an equidigital number, since it uses as much as digits as its factorization.

117818199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363646 (or 4363640 counting only the distinct ones).

The product of its digits is 36288, while the sum is 45.

The square root of 117818199 is about 10854.4091962667. The cubic root of 117818199 is about 490.2347882168.

The spelling of 117818199 in words is "one hundred seventeen million, eight hundred eighteen thousand, one hundred ninety-nine".