117812837 has 2 divisors, whose sum is σ = 117812838. Its totient is φ = 117812836.

The previous prime is 117812801. The next prime is 117812869. The reversal of 117812837 is 738218711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97436641 + 20376196 = 9871^2 + 4514^2 .

It is a cyclic number.

It is not a de Polignac number, because 117812837 - 2⁸ = 117812581 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117812837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117812137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58906418 + 58906419.

It is an arithmetic number, because the mean of its divisors is an integer number (58906419).

Almost surely, 2^117812837 is an apocalyptic number.

It is an amenable number.

117812837 is a deficient number, since it is larger than the sum of its proper divisors (1).

117812837 is an equidigital number, since it uses as much as digits as its factorization.

117812837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 38.

The square root of 117812837 is about 10854.1621970560. The cubic root of 117812837 is about 490.2273511122.

The spelling of 117812837 in words is "one hundred seventeen million, eight hundred twelve thousand, eight hundred thirty-seven".