117844513 has 2 divisors, whose sum is σ = 117844514. Its totient is φ = 117844512.

The previous prime is 117844511. The next prime is 117844549. The reversal of 117844513 is 315448711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107495424 + 10349089 = 10368^2 + 3217^2 .

It is a cyclic number.

It is not a de Polignac number, because 117844513 - 2¹ = 117844511 is a prime.

Together with 117844511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117844511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58922256 + 58922257.

It is an arithmetic number, because the mean of its divisors is an integer number (58922257).

Almost surely, 2^117844513 is an apocalyptic number.

It is an amenable number.

117844513 is a deficient number, since it is larger than the sum of its proper divisors (1).

117844513 is an equidigital number, since it uses as much as digits as its factorization.

117844513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 117844513 is about 10855.6212627376. The cubic root of 117844513 is about 490.2712825164.

The spelling of 117844513 in words is "one hundred seventeen million, eight hundred forty-four thousand, five hundred thirteen".