318018797 has 2 divisors, whose sum is σ = 318018798. Its totient is φ = 318018796.

The previous prime is 318018793. The next prime is 318018821. The reversal of 318018797 is 797810813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166384201 + 151634596 = 12899^2 + 12314^2 .

It is an emirp because it is prime and its reverse (797810813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318018797 - 2² = 318018793 is a prime.

It is a super-2 number, since 2×318018797² = 202271910490654418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318018793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159009398 + 159009399.

It is an arithmetic number, because the mean of its divisors is an integer number (159009399).

Almost surely, 2^318018797 is an apocalyptic number.

It is an amenable number.

318018797 is a deficient number, since it is larger than the sum of its proper divisors (1).

318018797 is an equidigital number, since it uses as much as digits as its factorization.

318018797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 318018797 is about 17833.0815340479. The cubic root of 318018797 is about 682.5758681599.

The spelling of 318018797 in words is "three hundred eighteen million, eighteen thousand, seven hundred ninety-seven".