1808761534273 has 2 divisors, whose sum is σ = 1808761534274. Its totient is φ = 1808761534272.

The previous prime is 1808761534267. The next prime is 1808761534313. The reversal of 1808761534273 is 3724351678081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1555976822544 + 252784711729 = 1247388^2 + 502777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1808761534273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1808761534373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904380767136 + 904380767137.

It is an arithmetic number, because the mean of its divisors is an integer number (904380767137).

Almost surely, 2^{1808761534273} is an apocalyptic number.

It is an amenable number.

1808761534273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808761534273 is an equidigital number, since it uses as much as digits as its factorization.

1808761534273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 1808761534273 in words is "one trillion, eight hundred eight billion, seven hundred sixty-one million, five hundred thirty-four thousand, two hundred seventy-three".