318675427549 has 2 divisors, whose sum is σ = 318675427550. Its totient is φ = 318675427548.

The previous prime is 318675427519. The next prime is 318675427571. The reversal of 318675427549 is 945724576813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245661983449 + 73013444100 = 495643^2 + 270210^2 .

It is a cyclic number.

It is not a de Polignac number, because 318675427549 - 2¹³ = 318675419357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318675427519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159337713774 + 159337713775.

It is an arithmetic number, because the mean of its divisors is an integer number (159337713775).

Almost surely, 2^318675427549 is an apocalyptic number.

It is an amenable number.

318675427549 is a deficient number, since it is larger than the sum of its proper divisors (1).

318675427549 is an equidigital number, since it uses as much as digits as its factorization.

318675427549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 61.

The spelling of 318675427549 in words is "three hundred eighteen billion, six hundred seventy-five million, four hundred twenty-seven thousand, five hundred forty-nine".