18348322787903 has 2 divisors, whose sum is σ = 18348322787904. Its totient is φ = 18348322787902.

The previous prime is 18348322787869. The next prime is 18348322788071. The reversal of 18348322787903 is 30978722384381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18348322787903 - 2¹² = 18348322783807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18348322787903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18348322786903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9174161393951 + 9174161393952.

It is an arithmetic number, because the mean of its divisors is an integer number (9174161393952).

Almost surely, 2^{18348322787903} is an apocalyptic number.

18348322787903 is a deficient number, since it is larger than the sum of its proper divisors (1).

18348322787903 is an equidigital number, since it uses as much as digits as its factorization.

18348322787903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 18348322787903 in words is "eighteen trillion, three hundred forty-eight billion, three hundred twenty-two million, seven hundred eighty-seven thousand, nine hundred three".