2001443344 has 20 divisors (see below), whose sum is σ = 3912116796. Its totient is φ = 991864832.

The previous prime is 2001443329. The next prime is 2001443357. The reversal of 2001443344 is 4433441002.

It can be written as a sum of positive squares in 2 ways, for example, as 1101443344 + 900000000 = 33188^2 + 30000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551689 + ... + 555304.

Almost surely, 2^2001443344 is an apocalyptic number.

It is an amenable number.

2001443344 is a deficient number, since it is larger than the sum of its proper divisors (1910673452).

2001443344 is a wasteful number, since it uses less digits than its factorization.

2001443344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107114 (or 1107108 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2001443344 is about 44737.4937161214. The cubic root of 2001443344 is about 1260.2240602632.

Adding to 2001443344 its reverse (4433441002), we get a palindrome (6434884346).

The spelling of 2001443344 in words is "two billion, one million, four hundred forty-three thousand, three hundred forty-four".