18350185000185 has 24 divisors (see below), whose sum is σ = 31824886733640. Its totient is φ = 9781257825792.

The previous prime is 18350185000177. The next prime is 18350185000219. The reversal of 18350185000185 is 58100058105381.

18350185000185 is a `hidden beast` number, since 1 + 8 + 3 + 50 + 18 + 500 + 0 + 1 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2955610817721 + 15394574182464 = 1719189^2 + 3923592^2 .

It is not a de Polignac number, because 18350185000185 - 2³ = 18350185000177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18350185000185.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114658890 + ... + 114818819.

It is an arithmetic number, because the mean of its divisors is an integer number (1326036947235).

Almost surely, 2^{18350185000185} is an apocalyptic number.

18350185000185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18350185000185 is a deficient number, since it is larger than the sum of its proper divisors (13474701733455).

18350185000185 is a wasteful number, since it uses less digits than its factorization.

18350185000185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229479497 (or 229479494 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 45.

The spelling of 18350185000185 in words is "eighteen trillion, three hundred fifty billion, one hundred eighty-five million, one hundred eighty-five", and thus it is an aban number.