318618361 has 2 divisors, whose sum is σ = 318618362. Its totient is φ = 318618360.

The previous prime is 318618343. The next prime is 318618367. The reversal of 318618361 is 163816813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194072761 + 124545600 = 13931^2 + 11160^2 .

It is a cyclic number.

It is not a de Polignac number, because 318618361 - 2¹³ = 318610169 is a prime.

It is equal to p_17204779 and since 318618361 and 17204779 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318618361.

It is not a weakly prime, because it can be changed into another prime (318618367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159309180 + 159309181.

It is an arithmetic number, because the mean of its divisors is an integer number (159309181).

Almost surely, 2^318618361 is an apocalyptic number.

It is an amenable number.

318618361 is a deficient number, since it is larger than the sum of its proper divisors (1).

318618361 is an equidigital number, since it uses as much as digits as its factorization.

318618361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 318618361 is about 17849.8840612481. The cubic root of 318618361 is about 683.0045545608.

The spelling of 318618361 in words is "three hundred eighteen million, six hundred eighteen thousand, three hundred sixty-one".