18258085 has 16 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 13568256.

The previous prime is 18258059. The next prime is 18258109. The reversal of 18258085 is 58085281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18258085 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356 + ... + 8074.

It is an arithmetic number, because the mean of its divisors is an integer number (1468800).

Almost surely, 2^18258085 is an apocalyptic number.

It is an amenable number.

18258085 is a deficient number, since it is larger than the sum of its proper divisors (5242715).

18258085 is a wasteful number, since it uses less digits than its factorization.

18258085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 18258085 is about 4272.9480455536. The cubic root of 18258085 is about 263.3207448272.

The spelling of 18258085 in words is "eighteen million, two hundred fifty-eight thousand, eighty-five".