18305020585 has 8 divisors (see below), whose sum is σ = 22674606336. Its totient is φ = 14171628720.

The previous prime is 18305020571. The next prime is 18305020607. The reversal of 18305020585 is 58502050381.

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

It is not a de Polignac number, because 18305020585 - 2⁵ = 18305020553 is a prime.

It is a Duffinian number.

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, 59048299 + ... + 59048608.

It is an arithmetic number, because the mean of its divisors is an integer number (2834325792).

Almost surely, 2^18305020585 is an apocalyptic number.

It is an amenable number.

18305020585 is a deficient number, since it is larger than the sum of its proper divisors (4369585751).

18305020585 is a wasteful number, since it uses less digits than its factorization.

18305020585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118096943.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 18305020585 in words is "eighteen billion, three hundred five million, twenty thousand, five hundred eighty-five".