3718322865689 has 2 divisors, whose sum is σ = 3718322865690. Its totient is φ = 3718322865688.

The previous prime is 3718322865659. The next prime is 3718322865709. The reversal of 3718322865689 is 9865682238173.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2333210425225 + 1385112440464 = 1527485^2 + 1176908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3718322865689 is a prime.

It is a super-3 number, since 3×3718322865689³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3718322865629) 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, 1859161432844 + 1859161432845.

It is an arithmetic number, because the mean of its divisors is an integer number (1859161432845).

Almost surely, 2^{3718322865689} is an apocalyptic number.

It is an amenable number.

3718322865689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3718322865689 is an equidigital number, since it uses as much as digits as its factorization.

3718322865689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209018880, while the sum is 68.

The spelling of 3718322865689 in words is "three trillion, seven hundred eighteen billion, three hundred twenty-two million, eight hundred sixty-five thousand, six hundred eighty-nine".