117818573 has 2 divisors, whose sum is σ = 117818574. Its totient is φ = 117818572.

The previous prime is 117818549. The next prime is 117818599. The reversal of 117818573 is 375818711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71537764 + 46280809 = 8458^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 117818573 - 2⁶ = 117818509 is a prime.

It is a super-2 number, since 2×117818573² = 27762432287512658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 117818573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117818513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58909286 + 58909287.

It is an arithmetic number, because the mean of its divisors is an integer number (58909287).

Almost surely, 2^117818573 is an apocalyptic number.

It is an amenable number.

117818573 is a deficient number, since it is larger than the sum of its proper divisors (1).

117818573 is an equidigital number, since it uses as much as digits as its factorization.

117818573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 41.

The square root of 117818573 is about 10854.4264242750. The cubic root of 117818573 is about 490.2353069471.

The spelling of 117818573 in words is "one hundred seventeen million, eight hundred eighteen thousand, five hundred seventy-three".