1808606820079 has 2 divisors, whose sum is σ = 1808606820080. Its totient is φ = 1808606820078.

The previous prime is 1808606820073. The next prime is 1808606820161. The reversal of 1808606820079 is 9700286068081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1808606820079 - 2⁵ = 1808606820047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1808606820073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904303410039 + 904303410040.

It is an arithmetic number, because the mean of its divisors is an integer number (904303410040).

Almost surely, 2^{1808606820079} is an apocalyptic number.

1808606820079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808606820079 is an equidigital number, since it uses as much as digits as its factorization.

1808606820079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 1808606820079 in words is "one trillion, eight hundred eight billion, six hundred six million, eight hundred twenty thousand, seventy-nine".