318906163 has 2 divisors, whose sum is σ = 318906164. Its totient is φ = 318906162.

The previous prime is 318906157. The next prime is 318906167. The reversal of 318906163 is 361609813.

It is a strong prime.

It is an emirp because it is prime and its reverse (361609813) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318906163 is a prime.

It is a super-2 number, since 2×318906163² = 203402281598765138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318906167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159453081 + 159453082.

It is an arithmetic number, because the mean of its divisors is an integer number (159453082).

Almost surely, 2^318906163 is an apocalyptic number.

318906163 is a deficient number, since it is larger than the sum of its proper divisors (1).

318906163 is an equidigital number, since it uses as much as digits as its factorization.

318906163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 318906163 is about 17857.9439746013. The cubic root of 318906163 is about 683.2101410811.

The spelling of 318906163 in words is "three hundred eighteen million, nine hundred six thousand, one hundred sixty-three".