18085623 has 8 divisors (see below), whose sum is σ = 24249600. Its totient is φ = 11989368.

The previous prime is 18085609. The next prime is 18085631. The reversal of 18085623 is 32658081.

It is a happy number.

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

It is not a de Polignac number, because 18085623 - 2⁶ = 18085559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18085673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16303 + ... + 17376.

It is an arithmetic number, because the mean of its divisors is an integer number (3031200).

Almost surely, 2^18085623 is an apocalyptic number.

18085623 is a deficient number, since it is larger than the sum of its proper divisors (6163977).

18085623 is a wasteful number, since it uses less digits than its factorization.

18085623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33861.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18085623 is about 4252.7194828721. The cubic root of 18085623 is about 262.4890299270.

The spelling of 18085623 in words is "eighteen million, eighty-five thousand, six hundred twenty-three".