18085337 has 4 divisors (see below), whose sum is σ = 18871680. Its totient is φ = 17298996.

The previous prime is 18085289. The next prime is 18085351. The reversal of 18085337 is 73358081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73358081 = 29 ⋅2529589.

It is a cyclic number.

It is not a de Polignac number, because 18085337 - 2⁶ = 18085273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18085297 and 18085306.

It is not an unprimeable number, because it can be changed into a prime (18085237) 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, 393137 + ... + 393182.

It is an arithmetic number, because the mean of its divisors is an integer number (4717920).

Almost surely, 2^18085337 is an apocalyptic number.

It is an amenable number.

18085337 is a deficient number, since it is larger than the sum of its proper divisors (786343).

18085337 is an equidigital number, since it uses as much as digits as its factorization.

18085337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786342.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 18085337 is about 4252.6858571966. The cubic root of 18085337 is about 262.4876462818.

The spelling of 18085337 in words is "eighteen million, eighty-five thousand, three hundred thirty-seven".