918018697 has 2 divisors, whose sum is σ = 918018698. Its totient is φ = 918018696.

The previous prime is 918018691. The next prime is 918018769. The reversal of 918018697 is 796810819.

Together with next prime (918018769) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916212361 + 1806336 = 30269^2 + 1344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918018697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 918018697.

It is not a weakly prime, because it can be changed into another prime (918018691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459009348 + 459009349.

It is an arithmetic number, because the mean of its divisors is an integer number (459009349).

Almost surely, 2^918018697 is an apocalyptic number.

It is an amenable number.

918018697 is a deficient number, since it is larger than the sum of its proper divisors (1).

918018697 is an equidigital number, since it uses as much as digits as its factorization.

918018697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 918018697 is about 30298.8233599921. The cubic root of 918018697 is about 971.8901384890.

The spelling of 918018697 in words is "nine hundred eighteen million, eighteen thousand, six hundred ninety-seven".