1002044512 has 72 divisors (see below), whose sum is σ = 2343860064. Its totient is φ = 420279552.

The previous prime is 1002044431. The next prime is 1002044531. The reversal of 1002044512 is 2154402001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002044512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66898 + ... + 80494.

It is an arithmetic number, because the mean of its divisors is an integer number (32553612).

Almost surely, 2^1002044512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002044512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171930032).

1002044512 is an abundant number, since it is smaller than the sum of its proper divisors (1341815552).

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

1002044512 is a wasteful number, since it uses less digits than its factorization.

1002044512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13668 (or 13653 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1002044512 is about 31655.0866686541. The cubic root of 1002044512 is about 1000.6810400791.

Adding to 1002044512 its reverse (2154402001), we get a palindrome (3156446513).

The spelling of 1002044512 in words is "one billion, two million, forty-four thousand, five hundred twelve".