18085443 has 8 divisors (see below), whose sum is σ = 24229056. Its totient is φ = 11999400.

The previous prime is 18085439. The next prime is 18085477. The reversal of 18085443 is 34458081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18085443 - 2² = 18085439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18075443) 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 7 ways as a sum of consecutive naturals, for example, 13653 + ... + 14918.

It is an arithmetic number, because the mean of its divisors is an integer number (3028632).

Almost surely, 2^18085443 is an apocalyptic number.

18085443 is a deficient number, since it is larger than the sum of its proper divisors (6143613).

18085443 is a wasteful number, since it uses less digits than its factorization.

18085443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28785.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 18085443 is about 4252.6983198906. The cubic root of 18085443 is about 262.4881591031.

It can be divided in two parts, 18085 and 443, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 18085443 in words is "eighteen million, eighty-five thousand, four hundred forty-three".