318875438689 has 2 divisors, whose sum is σ = 318875438690. Its totient is φ = 318875438688.

The previous prime is 318875438659. The next prime is 318875438719. The reversal of 318875438689 is 986834578813.

It is a balanced prime because it is at equal distance from previous prime (318875438659) and next prime (318875438719).

It can be written as a sum of positive squares in only one way, i.e., 275721608464 + 43153830225 = 525092^2 + 207735^2 .

It is a cyclic number.

It is not a de Polignac number, because 318875438689 - 2¹⁵ = 318875405921 is a prime.

It is not a weakly prime, because it can be changed into another prime (318875438659) 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, 159437719344 + 159437719345.

It is an arithmetic number, because the mean of its divisors is an integer number (159437719345).

Almost surely, 2^318875438689 is an apocalyptic number.

It is an amenable number.

318875438689 is a deficient number, since it is larger than the sum of its proper divisors (1).

318875438689 is an equidigital number, since it uses as much as digits as its factorization.

318875438689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 278691840, while the sum is 70.

The spelling of 318875438689 in words is "three hundred eighteen billion, eight hundred seventy-five million, four hundred thirty-eight thousand, six hundred eighty-nine".