318448943 has 2 divisors, whose sum is σ = 318448944. Its totient is φ = 318448942.

The previous prime is 318448939. The next prime is 318448967. The reversal of 318448943 is 349844813.

It is a weak prime.

It is an emirp because it is prime and its reverse (349844813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318448943 - 2² = 318448939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318448894 and 318448903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318448343) 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, 159224471 + 159224472.

It is an arithmetic number, because the mean of its divisors is an integer number (159224472).

Almost surely, 2^318448943 is an apocalyptic number.

318448943 is a deficient number, since it is larger than the sum of its proper divisors (1).

318448943 is an equidigital number, since it uses as much as digits as its factorization.

318448943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 318448943 is about 17845.1377971704. The cubic root of 318448943 is about 682.8834757665.

The spelling of 318448943 in words is "three hundred eighteen million, four hundred forty-eight thousand, nine hundred forty-three".