918395514989 has 2 divisors, whose sum is σ = 918395514990. Its totient is φ = 918395514988.

The previous prime is 918395514937. The next prime is 918395514997. The reversal of 918395514989 is 989415593819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908860968964 + 9534546025 = 953342^2 + 97645^2 .

It is an emirp because it is prime and its reverse (989415593819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 918395514989 - 2²⁸ = 918127079533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918395516989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459197757494 + 459197757495.

It is an arithmetic number, because the mean of its divisors is an integer number (459197757495).

Almost surely, 2^918395514989 is an apocalyptic number.

It is an amenable number.

918395514989 is a deficient number, since it is larger than the sum of its proper divisors (1).

918395514989 is an equidigital number, since it uses as much as digits as its factorization.

918395514989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125971200, while the sum is 71.

The spelling of 918395514989 in words is "nine hundred eighteen billion, three hundred ninety-five million, five hundred fourteen thousand, nine hundred eighty-nine".