918397648895 has 4 divisors (see below), whose sum is σ = 1102077178680. Its totient is φ = 734718119112.

The previous prime is 918397648891. The next prime is 918397648901. The reversal of 918397648895 is 598846793819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 598846793819 = 1627 ⋅368068097.

It is a cyclic number.

It is not a de Polignac number, because 918397648895 - 2² = 918397648891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918397648891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91839764885 + ... + 91839764894.

It is an arithmetic number, because the mean of its divisors is an integer number (275519294670).

Almost surely, 2^918397648895 is an apocalyptic number.

918397648895 is a deficient number, since it is larger than the sum of its proper divisors (183679529785).

918397648895 is a wasteful number, since it uses less digits than its factorization.

918397648895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183679529784.

The product of its digits is 940584960, while the sum is 77.

The spelling of 918397648895 in words is "nine hundred eighteen billion, three hundred ninety-seven million, six hundred forty-eight thousand, eight hundred ninety-five".