318636326653 has 2 divisors, whose sum is σ = 318636326654. Its totient is φ = 318636326652.

The previous prime is 318636326641. The next prime is 318636326731. The reversal of 318636326653 is 356623636813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302057961604 + 16578365049 = 549598^2 + 128757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318636326653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318636326653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318636336653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159318163326 + 159318163327.

It is an arithmetic number, because the mean of its divisors is an integer number (159318163327).

Almost surely, 2^318636326653 is an apocalyptic number.

It is an amenable number.

318636326653 is a deficient number, since it is larger than the sum of its proper divisors (1).

318636326653 is an equidigital number, since it uses as much as digits as its factorization.

318636326653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 52.

The spelling of 318636326653 in words is "three hundred eighteen billion, six hundred thirty-six million, three hundred twenty-six thousand, six hundred fifty-three".