18052785 has 12 divisors (see below), whose sum is σ = 31291572. Its totient is φ = 9628128.

The previous prime is 18052729. The next prime is 18052813. The reversal of 18052785 is 58725081.

It can be written as a sum of positive squares in 2 ways, for example, as 13927824 + 4124961 = 3732^2 + 2031^2 .

It is not a de Polignac number, because 18052785 - 2⁶ = 18052721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200542 + ... + 200631.

It is an arithmetic number, because the mean of its divisors is an integer number (2607631).

Almost surely, 2^18052785 is an apocalyptic number.

18052785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18052785 is a deficient number, since it is larger than the sum of its proper divisors (13238787).

18052785 is a wasteful number, since it uses less digits than its factorization.

18052785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401184 (or 401181 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 18052785 is about 4248.8569050981. The cubic root of 18052785 is about 262.3300668859.

The spelling of 18052785 in words is "eighteen million, fifty-two thousand, seven hundred eighty-five".