318486349 has 2 divisors, whose sum is σ = 318486350. Its totient is φ = 318486348.

The previous prime is 318486293. The next prime is 318486361. The reversal of 318486349 is 943684813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267976900 + 50509449 = 16370^2 + 7107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318486349 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 318486299 and 318486308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318426349) 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, 159243174 + 159243175.

It is an arithmetic number, because the mean of its divisors is an integer number (159243175).

Almost surely, 2^318486349 is an apocalyptic number.

It is an amenable number.

318486349 is a deficient number, since it is larger than the sum of its proper divisors (1).

318486349 is an equidigital number, since it uses as much as digits as its factorization.

318486349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 318486349 is about 17846.1858389965. The cubic root of 318486349 is about 682.9102125896.

The spelling of 318486349 in words is "three hundred eighteen million, four hundred eighty-six thousand, three hundred forty-nine".