18348642322973 has 2 divisors, whose sum is σ = 18348642322974. Its totient is φ = 18348642322972.

The previous prime is 18348642322957. The next prime is 18348642323051. The reversal of 18348642322973 is 37922324684381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15680950566724 + 2667691756249 = 3959918^2 + 1633307^2 .

It is a cyclic number.

It is not a de Polignac number, because 18348642322973 - 2⁴ = 18348642322957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18348642322903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9174321161486 + 9174321161487.

It is an arithmetic number, because the mean of its divisors is an integer number (9174321161487).

Almost surely, 2^{18348642322973} is an apocalyptic number.

It is an amenable number.

18348642322973 is a deficient number, since it is larger than the sum of its proper divisors (1).

18348642322973 is an equidigital number, since it uses as much as digits as its factorization.

18348642322973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 62.

The spelling of 18348642322973 in words is "eighteen trillion, three hundred forty-eight billion, six hundred forty-two million, three hundred twenty-two thousand, nine hundred seventy-three".