1002543444 has 72 divisors (see below), whose sum is σ = 2899985088. Its totient is φ = 286070400.

The previous prime is 1002543433. The next prime is 1002543449. The reversal of 1002543444 is 4443452001.

It is a happy number.

1002543444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1002543444² = 2010186714214762272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002543449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236544 + ... + 240744.

Almost surely, 2^1002543444 is an apocalyptic number.

1002543444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1002543444 is an abundant number, since it is smaller than the sum of its proper divisors (1897441644).

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

1002543444 is a wasteful number, since it uses less digits than its factorization.

1002543444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5165 (or 5160 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1002543444 is about 31662.9664434651. The cubic root of 1002543444 is about 1000.8470968909.

Adding to 1002543444 its reverse (4443452001), we get a palindrome (5445995445).

It can be divided in two parts, 1002 and 543444, that added together give a triangular number (544446 = T₁₀₄₃).

The spelling of 1002543444 in words is "one billion, two million, five hundred forty-three thousand, four hundred forty-four".