6442944013 has 8 divisors (see below), whose sum is σ = 7143890976. Its totient is φ = 5761201200.

The previous prime is 6442943989. The next prime is 6442944029. The reversal of 6442944013 is 3104492446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6442944013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442944043) 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 7 ways as a sum of consecutive naturals, for example, 4800331 + ... + 4801672.

It is an arithmetic number, because the mean of its divisors is an integer number (892986372).

Almost surely, 2^6442944013 is an apocalyptic number.

It is an amenable number.

6442944013 is a deficient number, since it is larger than the sum of its proper divisors (700946963).

6442944013 is a wasteful number, since it uses less digits than its factorization.

6442944013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602075.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 6442944013 is about 80267.9513442320. The cubic root of 6442944013 is about 1860.7789558271.

The spelling of 6442944013 in words is "six billion, four hundred forty-two million, nine hundred forty-four thousand, thirteen".