18142585 has 8 divisors (see below), whose sum is σ = 21943296. Its totient is φ = 14399280.

The previous prime is 18142573. The next prime is 18142591. The reversal of 18142585 is 58524181.

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

It is not a de Polignac number, because 18142585 - 2⁹ = 18142073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18142585.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13651 + ... + 14920.

It is an arithmetic number, because the mean of its divisors is an integer number (2742912).

Almost surely, 2^18142585 is an apocalyptic number.

It is an amenable number.

18142585 is a deficient number, since it is larger than the sum of its proper divisors (3800711).

18142585 is a wasteful number, since it uses less digits than its factorization.

18142585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28703.

The product of its digits is 12800, while the sum is 34.

The square root of 18142585 is about 4259.4113443057. The cubic root of 18142585 is about 262.7643172858.

The spelling of 18142585 in words is "eighteen million, one hundred forty-two thousand, five hundred eighty-five".