1808798084613 has 12 divisors (see below), whose sum is σ = 2813685909580. Its totient is φ = 1113106513536.

The previous prime is 1808798084557. The next prime is 1808798084617. The reversal of 1808798084613 is 3164808978081.

1808798084613 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 7 + 9 + 8 + 0 + 8 + 4 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 632664341604 + 1176133743009 = 795402^2 + 1084497^2 .

It is not a de Polignac number, because 1808798084613 - 2⁶ = 1808798084549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808798084617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7729906228 + ... + 7729906461.

Almost surely, 2^{1808798084613} is an apocalyptic number.

1808798084613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1808798084613 is a deficient number, since it is larger than the sum of its proper divisors (1004887824967).

1808798084613 is a wasteful number, since it uses less digits than its factorization.

1808798084613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15459812708 (or 15459812705 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 1808798084613 in words is "one trillion, eight hundred eight billion, seven hundred ninety-eight million, eighty-four thousand, six hundred thirteen".