2168826444 has 36 divisors (see below), whose sum is σ = 5505861816. Its totient is φ = 719836608.

The previous prime is 2168826431. The next prime is 2168826449. The reversal of 2168826444 is 4446288612.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2168826444.

It is not an unprimeable number, because it can be changed into a prime (2168826449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120894 + ... + 137669.

It is an arithmetic number, because the mean of its divisors is an integer number (152940606).

Almost surely, 2^2168826444 is an apocalyptic number.

It is an amenable number.

2168826444 is an abundant number, since it is smaller than the sum of its proper divisors (3337035372).

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

2168826444 is a wasteful number, since it uses less digits than its factorization.

2168826444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258806 (or 258801 counting only the distinct ones).

The product of its digits is 589824, while the sum is 45.

The square root of 2168826444 is about 46570.6607640476. The cubic root of 2168826444 is about 1294.4191616108.

The spelling of 2168826444 in words is "two billion, one hundred sixty-eight million, eight hundred twenty-six thousand, four hundred forty-four".