117518407 has 2 divisors, whose sum is σ = 117518408. Its totient is φ = 117518406.

The previous prime is 117518369. The next prime is 117518461. The reversal of 117518407 is 704815711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117518407 - 2²³ = 109129799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117518497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58759203 + 58759204.

It is an arithmetic number, because the mean of its divisors is an integer number (58759204).

Almost surely, 2^117518407 is an apocalyptic number.

117518407 is a deficient number, since it is larger than the sum of its proper divisors (1).

117518407 is an equidigital number, since it uses as much as digits as its factorization.

117518407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 117518407 is about 10840.5907126872. The cubic root of 117518407 is about 489.8186292514.

The spelling of 117518407 in words is "one hundred seventeen million, five hundred eighteen thousand, four hundred seven".