6493115691 has 6 divisors (see below), whose sum is σ = 9378944900. Its totient is φ = 4328743788.

The previous prime is 6493115683. The next prime is 6493115719. The reversal of 6493115691 is 1965113946.

6493115691 is a `hidden beast` number, since 6 + 493 + 1 + 156 + 9 + 1 = 666.

It is not a de Polignac number, because 6493115691 - 2³ = 6493115683 is a prime.

It is a super-3 number, since 3×6493115691³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6493115611) 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, 360728641 + ... + 360728658.

Almost surely, 2^6493115691 is an apocalyptic number.

6493115691 is a deficient number, since it is larger than the sum of its proper divisors (2885829209).

6493115691 is a wasteful number, since it uses less digits than its factorization.

6493115691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721457305 (or 721457302 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 6493115691 is about 80579.8715002698. The cubic root of 6493115691 is about 1865.5964800199.

The spelling of 6493115691 in words is "six billion, four hundred ninety-three million, one hundred fifteen thousand, six hundred ninety-one".