318963919 has 2 divisors, whose sum is σ = 318963920. Its totient is φ = 318963918.

The previous prime is 318963917. The next prime is 318963973. The reversal of 318963919 is 919369813.

It is a weak prime.

It is an emirp because it is prime and its reverse (919369813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318963919 - 2¹ = 318963917 is a prime.

It is a super-2 number, since 2×318963919² = 203475963247677122, which contains 22 as substring.

Together with 318963917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318963913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159481959 + 159481960.

It is an arithmetic number, because the mean of its divisors is an integer number (159481960).

Almost surely, 2^318963919 is an apocalyptic number.

318963919 is a deficient number, since it is larger than the sum of its proper divisors (1).

318963919 is an equidigital number, since it uses as much as digits as its factorization.

318963919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 49.

The square root of 318963919 is about 17859.5609968442. The cubic root of 318963919 is about 683.2513832056.

The spelling of 318963919 in words is "three hundred eighteen million, nine hundred sixty-three thousand, nine hundred nineteen".