1808538243053 has 2 divisors, whose sum is σ = 1808538243054. Its totient is φ = 1808538243052.

The previous prime is 1808538243011. The next prime is 1808538243067. The reversal of 1808538243053 is 3503428358081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1711591325284 + 96946917769 = 1308278^2 + 311363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808538243053 - 2³⁶ = 1739818766317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1808538242992 and 1808538243010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1808538243073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904269121526 + 904269121527.

It is an arithmetic number, because the mean of its divisors is an integer number (904269121527).

Almost surely, 2^{1808538243053} is an apocalyptic number.

It is an amenable number.

1808538243053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808538243053 is an equidigital number, since it uses as much as digits as its factorization.

1808538243053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 1808538243053 in words is "one trillion, eight hundred eight billion, five hundred thirty-eight million, two hundred forty-three thousand, fifty-three".