1808052443849 has 2 divisors, whose sum is σ = 1808052443850. Its totient is φ = 1808052443848.

The previous prime is 1808052443833. The next prime is 1808052443861. The reversal of 1808052443849 is 9483442508081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009231206025 + 798821237824 = 1004605^2 + 893768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808052443849 - 2⁴ = 1808052443833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1808052443794 and 1808052443803.

It is not a weakly prime, because it can be changed into another prime (1808052443149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904026221924 + 904026221925.

It is an arithmetic number, because the mean of its divisors is an integer number (904026221925).

Almost surely, 2^{1808052443849} is an apocalyptic number.

It is an amenable number.

1808052443849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808052443849 is an equidigital number, since it uses as much as digits as its factorization.

1808052443849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 1808052443849 in words is "one trillion, eight hundred eight billion, fifty-two million, four hundred forty-three thousand, eight hundred forty-nine".