18293340193 has 2 divisors, whose sum is σ = 18293340194. Its totient is φ = 18293340192.

The previous prime is 18293340151. The next prime is 18293340211. The reversal of 18293340193 is 39104339281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13992997264 + 4300342929 = 118292^2 + 65577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18293340193 is a prime.

It is not a weakly prime, because it can be changed into another prime (18293343193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9146670096 + 9146670097.

It is an arithmetic number, because the mean of its divisors is an integer number (9146670097).

Almost surely, 2^18293340193 is an apocalyptic number.

It is an amenable number.

18293340193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18293340193 is an equidigital number, since it uses as much as digits as its factorization.

18293340193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 18293340193 in words is "eighteen billion, two hundred ninety-three million, three hundred forty thousand, one hundred ninety-three".