718144369 has 2 divisors, whose sum is σ = 718144370. Its totient is φ = 718144368.

The previous prime is 718144367. The next prime is 718144393. The reversal of 718144369 is 963441817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715295025 + 2849344 = 26745^2 + 1688^2 .

It is a cyclic number.

It is not a de Polignac number, because 718144369 - 2¹ = 718144367 is a prime.

It is a super-2 number, since 2×718144369² = 1031462669452816322, which contains 22 as substring.

Together with 718144367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (718144363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359072184 + 359072185.

It is an arithmetic number, because the mean of its divisors is an integer number (359072185).

Almost surely, 2^718144369 is an apocalyptic number.

It is an amenable number.

718144369 is a deficient number, since it is larger than the sum of its proper divisors (1).

718144369 is an equidigital number, since it uses as much as digits as its factorization.

718144369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 718144369 is about 26798.2157801597. The cubic root of 718144369 is about 895.5103022879.

The spelling of 718144369 in words is "seven hundred eighteen million, one hundred forty-four thousand, three hundred sixty-nine".