1002082805 has 8 divisors (see below), whose sum is σ = 1202671800. Its totient is φ = 801551296.

The previous prime is 1002082721. The next prime is 1002082841. The reversal of 1002082805 is 5082802001.

It can be written as a sum of positive squares in 4 ways, for example, as 6932689 + 995150116 = 2633^2 + 31546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002082805 - 2¹⁰ = 1002081781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51131 + ... + 67959.

It is an arithmetic number, because the mean of its divisors is an integer number (150333975).

Almost surely, 2^1002082805 is an apocalyptic number.

It is an amenable number.

1002082805 is a deficient number, since it is larger than the sum of its proper divisors (200588995).

1002082805 is a wasteful number, since it uses less digits than its factorization.

1002082805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28743.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1002082805 is about 31655.6915103746. The cubic root of 1002082805 is about 1000.6937868818.

Adding to 1002082805 its reverse (5082802001), we get a palindrome (6084884806).

The spelling of 1002082805 in words is "one billion, two million, eighty-two thousand, eight hundred five".