318479737 has 2 divisors, whose sum is σ = 318479738. Its totient is φ = 318479736.

The previous prime is 318479713. The next prime is 318479753. The reversal of 318479737 is 737974813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298978681 + 19501056 = 17291^2 + 4416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318479737 is a prime.

It is a super-3 number, since 3×318479737³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318476737) 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, 159239868 + 159239869.

It is an arithmetic number, because the mean of its divisors is an integer number (159239869).

Almost surely, 2^318479737 is an apocalyptic number.

It is an amenable number.

318479737 is a deficient number, since it is larger than the sum of its proper divisors (1).

318479737 is an equidigital number, since it uses as much as digits as its factorization.

318479737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 318479737 is about 17846.0005883671. Note that the first 3 decimals coincide. The cubic root of 318479737 is about 682.9054866586.

The spelling of 318479737 in words is "three hundred eighteen million, four hundred seventy-nine thousand, seven hundred thirty-seven".