2168855385 has 8 divisors (see below), whose sum is σ = 3470168640. Its totient is φ = 1156722864.

The previous prime is 2168855369. The next prime is 2168855401. The reversal of 2168855385 is 5835588612.

It is an interprime number because it is at equal distance from previous prime (2168855369) and next prime (2168855401).

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

It is not a de Polignac number, because 2168855385 - 2⁴ = 2168855369 is a prime.

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, 72295165 + ... + 72295194.

It is an arithmetic number, because the mean of its divisors is an integer number (433771080).

Almost surely, 2^2168855385 is an apocalyptic number.

It is an amenable number.

2168855385 is a deficient number, since it is larger than the sum of its proper divisors (1301313255).

2168855385 is a wasteful number, since it uses less digits than its factorization.

2168855385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144590367.

The product of its digits is 2304000, while the sum is 51.

The square root of 2168855385 is about 46570.9714843914. The cubic root of 2168855385 is about 1294.4249191974.

The spelling of 2168855385 in words is "two billion, one hundred sixty-eight million, eight hundred fifty-five thousand, three hundred eighty-five".