6513894764 has 36 divisors (see below), whose sum is σ = 12552928920. Its totient is φ = 2955438720.

The previous prime is 6513894727. The next prime is 6513894817. The reversal of 6513894764 is 4674983156.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41777 + ... + 121544.

It is an arithmetic number, because the mean of its divisors is an integer number (348692470).

Almost surely, 2^6513894764 is an apocalyptic number.

It is an amenable number.

6513894764 is a deficient number, since it is larger than the sum of its proper divisors (6039034156).

6513894764 is a wasteful number, since it uses less digits than its factorization.

6513894764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163410 (or 163395 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The square root of 6513894764 is about 80708.7031490409. The cubic root of 6513894764 is about 1867.5844361226.

The spelling of 6513894764 in words is "six billion, five hundred thirteen million, eight hundred ninety-four thousand, seven hundred sixty-four".