18085061 has 4 divisors (see below), whose sum is σ = 18871392. Its totient is φ = 17298732.

The previous prime is 18085057. The next prime is 18085073. The reversal of 18085061 is 16058081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18085061 - 2² = 18085057 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 (18085051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 393131 + ... + 393176.

It is an arithmetic number, because the mean of its divisors is an integer number (4717848).

Almost surely, 2^18085061 is an apocalyptic number.

It is an amenable number.

18085061 is a deficient number, since it is larger than the sum of its proper divisors (786331).

18085061 is an equidigital number, since it uses as much as digits as its factorization.

18085061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786330.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 18085061 is about 4252.6534069919. The cubic root of 18085061 is about 262.4863110019.

The spelling of 18085061 in words is "eighteen million, eighty-five thousand, sixty-one".