18584475305 has 12 divisors (see below), whose sum is σ = 24513077316. Its totient is φ = 13515981600.

The previous prime is 18584475253. The next prime is 18584475337. The reversal of 18584475305 is 50357448581.

It can be written as a sum of positive squares in 2 ways, for example, as 6358308121 + 12226167184 = 79739^2 + 110572^2 .

It is not a de Polignac number, because 18584475305 - 2¹⁰ = 18584474281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 15358466 + ... + 15359675.

It is an arithmetic number, because the mean of its divisors is an integer number (2042756443).

Almost surely, 2^18584475305 is an apocalyptic number.

It is an amenable number.

18584475305 is a deficient number, since it is larger than the sum of its proper divisors (5928602011).

18584475305 is a wasteful number, since it uses less digits than its factorization.

18584475305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30718168 (or 30718157 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 50.

The spelling of 18584475305 in words is "eighteen billion, five hundred eighty-four million, four hundred seventy-five thousand, three hundred five".