6515384913 has 6 divisors (see below), whose sum is σ = 9411111554. Its totient is φ = 4343589936.

The previous prime is 6515384891. The next prime is 6515384921. The reversal of 6515384913 is 3194835156.

6515384913 is a `hidden beast` number, since 6 + 5 + 153 + 8 + 491 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4952922129 + 1562462784 = 70377^2 + 39528^2 .

It is not a de Polignac number, because 6515384913 - 2¹⁴ = 6515368529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6515384413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361965820 + ... + 361965837.

Almost surely, 2^6515384913 is an apocalyptic number.

It is an amenable number.

6515384913 is a deficient number, since it is larger than the sum of its proper divisors (2895726641).

6515384913 is a wasteful number, since it uses less digits than its factorization.

6515384913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723931663 (or 723931660 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 6515384913 is about 80717.9342711395. The cubic root of 6515384913 is about 1867.7268377114.

The spelling of 6515384913 in words is "six billion, five hundred fifteen million, three hundred eighty-four thousand, nine hundred thirteen".