318544012049 has 2 divisors, whose sum is σ = 318544012050. Its totient is φ = 318544012048.

The previous prime is 318544012043. The next prime is 318544012063. The reversal of 318544012049 is 940210445813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270886939024 + 47657073025 = 520468^2 + 218305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318544012049 is a prime.

It is a super-2 number, since 2×318544012049² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318544011997 and 318544012015.

It is not a weakly prime, because it can be changed into another prime (318544012043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159272006024 + 159272006025.

It is an arithmetic number, because the mean of its divisors is an integer number (159272006025).

Almost surely, 2^318544012049 is an apocalyptic number.

It is an amenable number.

318544012049 is a deficient number, since it is larger than the sum of its proper divisors (1).

318544012049 is an equidigital number, since it uses as much as digits as its factorization.

318544012049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 318544012049 in words is "three hundred eighteen billion, five hundred forty-four million, twelve thousand, forty-nine".