718618319 has 2 divisors, whose sum is σ = 718618320. Its totient is φ = 718618318.

The previous prime is 718618309. The next prime is 718618321. The reversal of 718618319 is 913816817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 718618319 - 2²⁴ = 701841103 is a prime.

It is a super-2 number, since 2×718618319² = 1032824576804771522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 718618321, it forms a pair of twin primes.

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 718618319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718618309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359309159 + 359309160.

It is an arithmetic number, because the mean of its divisors is an integer number (359309160).

Almost surely, 2^718618319 is an apocalyptic number.

718618319 is a deficient number, since it is larger than the sum of its proper divisors (1).

718618319 is an equidigital number, since it uses as much as digits as its factorization.

718618319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 718618319 is about 26807.0572611020. The cubic root of 718618319 is about 895.7072607229.

The spelling of 718618319 in words is "seven hundred eighteen million, six hundred eighteen thousand, three hundred nineteen".