318735676381 has 2 divisors, whose sum is σ = 318735676382. Its totient is φ = 318735676380.

The previous prime is 318735676349. The next prime is 318735676393. The reversal of 318735676381 is 183676537813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287761436356 + 30974240025 = 536434^2 + 175995^2 .

It is a cyclic number.

It is not a de Polignac number, because 318735676381 - 2⁵ = 318735676349 is a prime.

It is a super-2 number, since 2×318735676381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318735676321) 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, 159367838190 + 159367838191.

It is an arithmetic number, because the mean of its divisors is an integer number (159367838191).

Almost surely, 2^318735676381 is an apocalyptic number.

It is an amenable number.

318735676381 is a deficient number, since it is larger than the sum of its proper divisors (1).

318735676381 is an equidigital number, since it uses as much as digits as its factorization.

318735676381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 58.

The spelling of 318735676381 in words is "three hundred eighteen billion, seven hundred thirty-five million, six hundred seventy-six thousand, three hundred eighty-one".