18348642322893 has 6 divisors (see below), whose sum is σ = 26503594466414. Its totient is φ = 12232428215256.

The previous prime is 18348642322883. The next prime is 18348642322897. The reversal of 18348642322893 is 39822324684381.

18348642322893 is a `hidden beast` number, since 1 + 8 + 3 + 486 + 42 + 3 + 2 + 28 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14582721725289 + 3765920597604 = 3818733^2 + 1940598^2 .

It is not a de Polignac number, because 18348642322893 - 2²² = 18348638128589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18348642322893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348642322897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1019369017930 + ... + 1019369017947.

Almost surely, 2^{18348642322893} is an apocalyptic number.

It is an amenable number.

18348642322893 is a deficient number, since it is larger than the sum of its proper divisors (8154952143521).

18348642322893 is a wasteful number, since it uses less digits than its factorization.

18348642322893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038738035883 (or 2038738035880 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 63.

The spelling of 18348642322893 in words is "eighteen trillion, three hundred forty-eight billion, six hundred forty-two million, three hundred twenty-two thousand, eight hundred ninety-three".