18085679 has 4 divisors (see below), whose sum is σ = 18669120. Its totient is φ = 17502240.

The previous prime is 18085673. The next prime is 18085687. The reversal of 18085679 is 97658081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18085679 - 2¹⁶ = 18020143 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 (18085673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291674 + ... + 291735.

It is an arithmetic number, because the mean of its divisors is an integer number (4667280).

Almost surely, 2^18085679 is an apocalyptic number.

18085679 is a deficient number, since it is larger than the sum of its proper divisors (583441).

18085679 is an equidigital number, since it uses as much as digits as its factorization.

18085679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583440.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18085679 is about 4252.7260668893. The cubic root of 18085679 is about 262.4893008489.

The spelling of 18085679 in words is "eighteen million, eighty-five thousand, six hundred seventy-nine".