18185000185 has 16 divisors (see below), whose sum is σ = 23918657472. Its totient is φ = 13162766400.

The previous prime is 18185000161. The next prime is 18185000201. The reversal of 18185000185 is 58100058181.

It is not a de Polignac number, because 18185000185 - 2⁵ = 18185000153 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771894 + ... + 795103.

It is an arithmetic number, because the mean of its divisors is an integer number (1494916092).

Almost surely, 2^18185000185 is an apocalyptic number.

It is an amenable number.

18185000185 is a deficient number, since it is larger than the sum of its proper divisors (5733657287).

18185000185 is a wasteful number, since it uses less digits than its factorization.

18185000185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567224.

The product of its (nonzero) digits is 12800, while the sum is 37.

The spelling of 18185000185 in words is "eighteen billion, one hundred eighty-five million, one hundred eighty-five", and thus it is an aban number.