117813738 has 48 divisors (see below), whose sum is σ = 278234784. Its totient is φ = 33153120.

The previous prime is 117813721. The next prime is 117813739. The reversal of 117813738 is 837318711.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117813696 and 117813705.

It is not an unprimeable number, because it can be changed into a prime (117813739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16708 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (5796558).

Almost surely, 2^117813738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117813738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139117392).

117813738 is an abundant number, since it is smaller than the sum of its proper divisors (160421046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117813738 is a wasteful number, since it uses less digits than its factorization.

117813738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067 (or 6060 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 117813738 is about 10854.2037017922. The cubic root of 117813738 is about 490.2286008167.

The spelling of 117813738 in words is "one hundred seventeen million, eight hundred thirteen thousand, seven hundred thirty-eight".