2002531444 has 48 divisors (see below), whose sum is σ = 3637218816. Its totient is φ = 964160000.

The previous prime is 2002531351. The next prime is 2002531451. The reversal of 2002531444 is 4441352002.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 4993644 + ... + 4994044.

It is an arithmetic number, because the mean of its divisors is an integer number (75775392).

Almost surely, 2^2002531444 is an apocalyptic number.

It is an amenable number.

2002531444 is a deficient number, since it is larger than the sum of its proper divisors (1634687372).

2002531444 is a wasteful number, since it uses less digits than its factorization.

2002531444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2002531444 is about 44749.6530042413. The cubic root of 2002531444 is about 1260.4523957096.

Adding to 2002531444 its reverse (4441352002), we get a palindrome (6443883446).

The spelling of 2002531444 in words is "two billion, two million, five hundred thirty-one thousand, four hundred forty-four".