117838913 has 8 divisors (see below), whose sum is σ = 124695936. Its totient is φ = 111126400.

The previous prime is 117838909. The next prime is 117838921. The reversal of 117838913 is 319838711.

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

It is a cyclic number.

It is not a de Polignac number, because 117838913 - 2² = 117838909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117838933) 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, 34448 + ... + 37713.

It is an arithmetic number, because the mean of its divisors is an integer number (15586992).

Almost surely, 2^117838913 is an apocalyptic number.

It is an amenable number.

117838913 is a deficient number, since it is larger than the sum of its proper divisors (6857023).

117838913 is an equidigital number, since it uses as much as digits as its factorization.

117838913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72255.

The product of its digits is 36288, while the sum is 41.

The square root of 117838913 is about 10855.3633287882. The cubic root of 117838913 is about 490.2635164564.

The spelling of 117838913 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, nine hundred thirteen".