18583984813 has 2 divisors, whose sum is σ = 18583984814. Its totient is φ = 18583984812.

The previous prime is 18583984789. The next prime is 18583984817. The reversal of 18583984813 is 31848938581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18539000964 + 44983849 = 136158^2 + 6707^2 .

It is a cyclic number.

It is not a de Polignac number, because 18583984813 - 2⁵ = 18583984781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18583984817) 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 as a sum of consecutive naturals, namely, 9291992406 + 9291992407.

It is an arithmetic number, because the mean of its divisors is an integer number (9291992407).

Almost surely, 2^18583984813 is an apocalyptic number.

It is an amenable number.

18583984813 is a deficient number, since it is larger than the sum of its proper divisors (1).

18583984813 is an equidigital number, since it uses as much as digits as its factorization.

18583984813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 58.

The spelling of 18583984813 in words is "eighteen billion, five hundred eighty-three million, nine hundred eighty-four thousand, eight hundred thirteen".