117814919 has 16 divisors (see below), whose sum is σ = 125122752. Its totient is φ = 110792448.

The previous prime is 117814909. The next prime is 117814927. The reversal of 117814919 is 919418711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117814919 is a prime.

It is a super-2 number, since 2×117814919² = 27760710277953122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117814909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142742 + ... + 143564.

It is an arithmetic number, because the mean of its divisors is an integer number (7820172).

Almost surely, 2^117814919 is an apocalyptic number.

117814919 is a deficient number, since it is larger than the sum of its proper divisors (7307833).

117814919 is an equidigital number, since it uses as much as digits as its factorization.

117814919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 18144, while the sum is 41.

The square root of 117814919 is about 10854.2581045413. The cubic root of 117814919 is about 490.2302388771.

The spelling of 117814919 in words is "one hundred seventeen million, eight hundred fourteen thousand, nine hundred nineteen".