318496193 has 2 divisors, whose sum is σ = 318496194. Its totient is φ = 318496192.

The previous prime is 318496187. The next prime is 318496223. The reversal of 318496193 is 391694813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310922689 + 7573504 = 17633^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 318496193 - 2⁸ = 318495937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (318496103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159248096 + 159248097.

It is an arithmetic number, because the mean of its divisors is an integer number (159248097).

Almost surely, 2^318496193 is an apocalyptic number.

It is an amenable number.

318496193 is a deficient number, since it is larger than the sum of its proper divisors (1).

318496193 is an equidigital number, since it uses as much as digits as its factorization.

318496193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 318496193 is about 17846.4616380951. The cubic root of 318496193 is about 682.9172484734.

The spelling of 318496193 in words is "three hundred eighteen million, four hundred ninety-six thousand, one hundred ninety-three".