18082773 has 12 divisors (see below), whose sum is σ = 26360620. Its totient is φ = 11943936.

The previous prime is 18082769. The next prime is 18082811. The reversal of 18082773 is 37728081.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 6671889 = 3378^2 + 2583^2 .

It is not a de Polignac number, because 18082773 - 2² = 18082769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8236 + ... + 10197.

Almost surely, 2^18082773 is an apocalyptic number.

It is an amenable number.

18082773 is a deficient number, since it is larger than the sum of its proper divisors (8277847).

18082773 is a wasteful number, since it uses less digits than its factorization.

18082773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18548 (or 18545 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 18082773 is about 4252.3843899629. The cubic root of 18082773 is about 262.4752412023.

The spelling of 18082773 in words is "eighteen million, eighty-two thousand, seven hundred seventy-three".