117338181 has 4 divisors (see below), whose sum is σ = 156450912. Its totient is φ = 78225452.

The previous prime is 117338159. The next prime is 117338191. The reversal of 117338181 is 181833711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117338181 - 2¹⁴ = 117321797 is a prime.

It is a super-2 number, since 2×117338181² = 27536497440777522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117338191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19556361 + ... + 19556366.

It is an arithmetic number, because the mean of its divisors is an integer number (39112728).

Almost surely, 2^117338181 is an apocalyptic number.

It is an amenable number.

117338181 is a deficient number, since it is larger than the sum of its proper divisors (39112731).

117338181 is an equidigital number, since it uses as much as digits as its factorization.

117338181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39112730.

The product of its digits is 4032, while the sum is 33.

The square root of 117338181 is about 10832.2749688143. The cubic root of 117338181 is about 489.5681061754.

The spelling of 117338181 in words is "one hundred seventeen million, three hundred thirty-eight thousand, one hundred eighty-one".