18986933080807 has 2 divisors, whose sum is σ = 18986933080808. Its totient is φ = 18986933080806.

The previous prime is 18986933080799. The next prime is 18986933080811. The reversal of 18986933080807 is 70808033968981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18986933080807 - 2³ = 18986933080799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18986933087807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9493466540403 + 9493466540404.

It is an arithmetic number, because the mean of its divisors is an integer number (9493466540404).

Almost surely, 2^{18986933080807} is an apocalyptic number.

18986933080807 is a deficient number, since it is larger than the sum of its proper divisors (1).

18986933080807 is an equidigital number, since it uses as much as digits as its factorization.

18986933080807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125411328, while the sum is 70.

The spelling of 18986933080807 in words is "eighteen trillion, nine hundred eighty-six billion, nine hundred thirty-three million, eighty thousand, eight hundred seven".