918390101917 has 2 divisors, whose sum is σ = 918390101918. Its totient is φ = 918390101916.

The previous prime is 918390101801. The next prime is 918390101933. The reversal of 918390101917 is 719101093819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675312507076 + 243077594841 = 821774^2 + 493029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918390101917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918390101957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459195050958 + 459195050959.

It is an arithmetic number, because the mean of its divisors is an integer number (459195050959).

Almost surely, 2^918390101917 is an apocalyptic number.

It is an amenable number.

918390101917 is a deficient number, since it is larger than the sum of its proper divisors (1).

918390101917 is an equidigital number, since it uses as much as digits as its factorization.

918390101917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 49.

The spelling of 918390101917 in words is "nine hundred eighteen billion, three hundred ninety million, one hundred one thousand, nine hundred seventeen".