318051736549 has 2 divisors, whose sum is σ = 318051736550. Its totient is φ = 318051736548.

The previous prime is 318051736531. The next prime is 318051736567. The reversal of 318051736549 is 945637150813.

It is a balanced prime because it is at equal distance from previous prime (318051736531) and next prime (318051736567).

It can be written as a sum of positive squares in only one way, i.e., 231859584324 + 86192152225 = 481518^2 + 293585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318051736549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318051736496 and 318051736505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318051736529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159025868274 + 159025868275.

It is an arithmetic number, because the mean of its divisors is an integer number (159025868275).

Almost surely, 2^318051736549 is an apocalyptic number.

It is an amenable number.

318051736549 is a deficient number, since it is larger than the sum of its proper divisors (1).

318051736549 is an equidigital number, since it uses as much as digits as its factorization.

318051736549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 318051736549 in words is "three hundred eighteen billion, fifty-one million, seven hundred thirty-six thousand, five hundred forty-nine".