18085486 has 4 divisors (see below), whose sum is σ = 27128232. Its totient is φ = 9042742.

The previous prime is 18085481. The next prime is 18085513. The reversal of 18085486 is 68458081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68458081 = 1213 ⋅56437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18085481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4521370 + ... + 4521373.

It is an arithmetic number, because the mean of its divisors is an integer number (6782058).

Almost surely, 2^18085486 is an apocalyptic number.

18085486 is a deficient number, since it is larger than the sum of its proper divisors (9042746).

18085486 is an equidigital number, since it uses as much as digits as its factorization.

18085486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042745.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 18085486 is about 4252.7033755013. The cubic root of 18085486 is about 262.4883671338.

The spelling of 18085486 in words is "eighteen million, eighty-five thousand, four hundred eighty-six".