6539097813 has 16 divisors (see below), whose sum is σ = 8830757376. Its totient is φ = 4303501040.

The previous prime is 6539097797. The next prime is 6539097839. The reversal of 6539097813 is 3187909356.

It is a cyclic number.

It is not a de Polignac number, because 6539097813 - 2⁴ = 6539097797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539097883) 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 15 ways as a sum of consecutive naturals, for example, 330778 + ... + 349988.

It is an arithmetic number, because the mean of its divisors is an integer number (551922336).

Almost surely, 2^6539097813 is an apocalyptic number.

It is an amenable number.

6539097813 is a deficient number, since it is larger than the sum of its proper divisors (2291659563).

6539097813 is a wasteful number, since it uses less digits than its factorization.

6539097813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20664.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 6539097813 is about 80864.6882947062. The cubic root of 6539097813 is about 1869.9899732559.

The spelling of 6539097813 in words is "six billion, five hundred thirty-nine million, ninety-seven thousand, eight hundred thirteen".