386279318681 has 2 divisors, whose sum is σ = 386279318682. Its totient is φ = 386279318680.

The previous prime is 386279318669. The next prime is 386279318693. The reversal of 386279318681 is 186813972683.

It is a balanced prime because it is at equal distance from previous prime (386279318669) and next prime (386279318693).

It can be written as a sum of positive squares in only one way, i.e., 329797518400 + 56481800281 = 574280^2 + 237659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386279318681 is a prime.

It is a super-2 number, since 2×386279318681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (386279318981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193139659340 + 193139659341.

It is an arithmetic number, because the mean of its divisors is an integer number (193139659341).

Almost surely, 2^386279318681 is an apocalyptic number.

It is an amenable number.

386279318681 is a deficient number, since it is larger than the sum of its proper divisors (1).

386279318681 is an equidigital number, since it uses as much as digits as its factorization.

386279318681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 62.

The spelling of 386279318681 in words is "three hundred eighty-six billion, two hundred seventy-nine million, three hundred eighteen thousand, six hundred eighty-one".