318648406847 has 2 divisors, whose sum is σ = 318648406848. Its totient is φ = 318648406846.

The previous prime is 318648406807. The next prime is 318648406889. The reversal of 318648406847 is 748604846813.

It is a weak prime.

It is an emirp because it is prime and its reverse (748604846813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318648406847 - 2⁸ = 318648406591 is a prime.

It is a super-2 number, since 2×318648406847² (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 (318648406807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159324203423 + 159324203424.

It is an arithmetic number, because the mean of its divisors is an integer number (159324203424).

Almost surely, 2^318648406847 is an apocalyptic number.

318648406847 is a deficient number, since it is larger than the sum of its proper divisors (1).

318648406847 is an equidigital number, since it uses as much as digits as its factorization.

318648406847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24772608, while the sum is 59.

The spelling of 318648406847 in words is "three hundred eighteen billion, six hundred forty-eight million, four hundred six thousand, eight hundred forty-seven".