6491003291 has 24 divisors (see below), whose sum is σ = 7105993920. Its totient is φ = 5924882432.

The previous prime is 6491003279. The next prime is 6491003303. The reversal of 6491003291 is 1923001946.

It is an interprime number because it is at equal distance from previous prime (6491003279) and next prime (6491003303).

It is not a de Polignac number, because 6491003291 - 2¹⁴ = 6490986907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6491003201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532765 + ... + 1536993.

It is an arithmetic number, because the mean of its divisors is an integer number (296083080).

Almost surely, 2^6491003291 is an apocalyptic number.

6491003291 is a deficient number, since it is larger than the sum of its proper divisors (614990629).

6491003291 is a wasteful number, since it uses less digits than its factorization.

6491003291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423 (or 4406 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6491003291 is about 80566.7629422953. The cubic root of 6491003291 is about 1865.3941470860.

The spelling of 6491003291 in words is "six billion, four hundred ninety-one million, three thousand, two hundred ninety-one".