2168438922 has 48 divisors (see below), whose sum is σ = 5085225600. Its totient is φ = 663844896.

The previous prime is 2168438891. The next prime is 2168438929. The reversal of 2168438922 is 2298348612.

It is not an unprimeable number, because it can be changed into a prime (2168438929) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 23283 + ... + 69849.

It is an arithmetic number, because the mean of its divisors is an integer number (105942200).

Almost surely, 2^2168438922 is an apocalyptic number.

It is a pronic number, being equal to 46566×46567.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168438922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2542612800).

2168438922 is an abundant number, since it is smaller than the sum of its proper divisors (2916786678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2168438922 is a wasteful number, since it uses less digits than its factorization.

2168438922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46787 (or 46784 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 2168438922 is about 46566.4999973157. The cubic root of 2168438922 is about 1294.3420621910.

It can be divided in two parts, 21684 and 38922, that added together give a palindrome (60606).

The spelling of 2168438922 in words is "two billion, one hundred sixty-eight million, four hundred thirty-eight thousand, nine hundred twenty-two".