318735676349 has 2 divisors, whose sum is σ = 318735676350. Its totient is φ = 318735676348.

The previous prime is 318735676321. The next prime is 318735676381. The reversal of 318735676349 is 943676537813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309533111449 + 9202564900 = 556357^2 + 95930^2 .

It is an emirp because it is prime and its reverse (943676537813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318735676349 - 2¹² = 318735672253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 318735676291 and 318735676300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318735676249) 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, 159367838174 + 159367838175.

It is an arithmetic number, because the mean of its divisors is an integer number (159367838175).

Almost surely, 2^318735676349 is an apocalyptic number.

It is an amenable number.

318735676349 is a deficient number, since it is larger than the sum of its proper divisors (1).

318735676349 is an equidigital number, since it uses as much as digits as its factorization.

318735676349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 62.

The spelling of 318735676349 in words is "three hundred eighteen billion, seven hundred thirty-five million, six hundred seventy-six thousand, three hundred forty-nine".