1818577875773 has 2 divisors, whose sum is σ = 1818577875774. Its totient is φ = 1818577875772.

The previous prime is 1818577875757. The next prime is 1818577875833. The reversal of 1818577875773 is 3775787758181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1752014907769 + 66562968004 = 1323637^2 + 257998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818577875773 - 2⁴ = 1818577875757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1818577875773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818577878773) 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, 909288937886 + 909288937887.

It is an arithmetic number, because the mean of its divisors is an integer number (909288937887).

Almost surely, 2^{1818577875773} is an apocalyptic number.

It is an amenable number.

1818577875773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818577875773 is an equidigital number, since it uses as much as digits as its factorization.

1818577875773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645388800, while the sum is 74.

The spelling of 1818577875773 in words is "one trillion, eight hundred eighteen billion, five hundred seventy-seven million, eight hundred seventy-five thousand, seven hundred seventy-three".