18690946559983 has 2 divisors, whose sum is σ = 18690946559984. Its totient is φ = 18690946559982.

The previous prime is 18690946559941. The next prime is 18690946560001. The reversal of 18690946559983 is 38995564909681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18690946559983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18690946559897 and 18690946559906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18690946559933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9345473279991 + 9345473279992.

It is an arithmetic number, because the mean of its divisors is an integer number (9345473279992).

Almost surely, 2^{18690946559983} is an apocalyptic number.

18690946559983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18690946559983 is an equidigital number, since it uses as much as digits as its factorization.

18690946559983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4534963200, while the sum is 82.

The spelling of 18690946559983 in words is "eighteen trillion, six hundred ninety billion, nine hundred forty-six million, five hundred fifty-nine thousand, nine hundred eighty-three".