2185168855 has 8 divisors (see below), whose sum is σ = 2622477312. Its totient is φ = 1747951968.

The previous prime is 2185168849. The next prime is 2185168877. The reversal of 2185168855 is 5588615812.

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

It is a cyclic number.

It is not a de Polignac number, because 2185168855 - 2⁹ = 2185168343 is a prime.

It is a super-2 number, since 2×2185168855² = 9549925849724022050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2185168799 and 2185168808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51729 + ... + 83941.

It is an arithmetic number, because the mean of its divisors is an integer number (327809664).

Almost surely, 2^2185168855 is an apocalyptic number.

2185168855 is a deficient number, since it is larger than the sum of its proper divisors (437308457).

2185168855 is a wasteful number, since it uses less digits than its factorization.

2185168855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45785.

The product of its digits is 768000, while the sum is 49.

The square root of 2185168855 is about 46745.7897034589. The cubic root of 2185168855 is about 1297.6622394064.

The spelling of 2185168855 in words is "two billion, one hundred eighty-five million, one hundred sixty-eight thousand, eight hundred fifty-five".