6489639013 has 32 divisors (see below), whose sum is σ = 7868714112. Its totient is φ = 5272646400.

The previous prime is 6489638971. The next prime is 6489639047. The reversal of 6489639013 is 3109369846.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6489639013 is a prime.

It is a super-2 number, since 2×6489639013² = 84230829038103228338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489639073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1113495 + ... + 1119307.

It is an arithmetic number, because the mean of its divisors is an integer number (245897316).

Almost surely, 2^6489639013 is an apocalyptic number.

It is an amenable number.

6489639013 is a deficient number, since it is larger than the sum of its proper divisors (1379075099).

6489639013 is a wasteful number, since it uses less digits than its factorization.

6489639013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6085.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 6489639013 is about 80558.2957428966. The cubic root of 6489639013 is about 1865.2634485176.

The spelling of 6489639013 in words is "six billion, four hundred eighty-nine million, six hundred thirty-nine thousand, thirteen".