18814603347893 has 2 divisors, whose sum is σ = 18814603347894. Its totient is φ = 18814603347892.

The previous prime is 18814603347887. The next prime is 18814603347899. The reversal of 18814603347893 is 39874330641881.

It is a balanced prime because it is at equal distance from previous prime (18814603347887) and next prime (18814603347899).

It can be written as a sum of positive squares in only one way, i.e., 14174788263364 + 4639815084529 = 3764942^2 + 2154023^2 .

It is a cyclic number.

It is not a de Polignac number, because 18814603347893 - 2³² = 18810308380597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18814603347899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9407301673946 + 9407301673947.

It is an arithmetic number, because the mean of its divisors is an integer number (9407301673947).

Almost surely, 2^{18814603347893} is an apocalyptic number.

It is an amenable number.

18814603347893 is a deficient number, since it is larger than the sum of its proper divisors (1).

18814603347893 is an equidigital number, since it uses as much as digits as its factorization.

18814603347893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 18814603347893 in words is "eighteen trillion, eight hundred fourteen billion, six hundred three million, three hundred forty-seven thousand, eight hundred ninety-three".