117935813 has 4 divisors (see below), whose sum is σ = 117990060. Its totient is φ = 117881568.

The previous prime is 117935791. The next prime is 117935827. The reversal of 117935813 is 318539711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42211009 + 75724804 = 6497^2 + 8702^2 .

It is a cyclic number.

It is not a de Polignac number, because 117935813 - 2¹² = 117931717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117935843) 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, 23720 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (29497515).

Almost surely, 2^117935813 is an apocalyptic number.

It is an amenable number.

117935813 is a deficient number, since it is larger than the sum of its proper divisors (54247).

117935813 is an equidigital number, since it uses as much as digits as its factorization.

117935813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54246.

The product of its digits is 22680, while the sum is 38.

The square root of 117935813 is about 10859.8256431676. The cubic root of 117935813 is about 490.3978623410.

The spelling of 117935813 in words is "one hundred seventeen million, nine hundred thirty-five thousand, eight hundred thirteen".