117818117 has 2 divisors, whose sum is σ = 117818118. Its totient is φ = 117818116.

The previous prime is 117818089. The next prime is 117818123. The reversal of 117818117 is 711818711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81830116 + 35988001 = 9046^2 + 5999^2 .

It is an emirp because it is prime and its reverse (711818711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117818117 - 2¹⁰ = 117817093 is a prime.

It is a super-2 number, since 2×117818117² = 27762217386851378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117818137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58909058 + 58909059.

It is an arithmetic number, because the mean of its divisors is an integer number (58909059).

Almost surely, 2^117818117 is an apocalyptic number.

It is an amenable number.

117818117 is a deficient number, since it is larger than the sum of its proper divisors (1).

117818117 is an equidigital number, since it uses as much as digits as its factorization.

117818117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 35.

The square root of 117818117 is about 10854.4054189992. The cubic root of 117818117 is about 490.2346744843.

The spelling of 117818117 in words is "one hundred seventeen million, eight hundred eighteen thousand, one hundred seventeen".