6513933893 has 2 divisors, whose sum is σ = 6513933894. Its totient is φ = 6513933892.

The previous prime is 6513933887. The next prime is 6513933901. The reversal of 6513933893 is 3983393156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6510391969 + 3541924 = 80687^2 + 1882^2 .

It is a cyclic number.

It is not a de Polignac number, because 6513933893 - 2²² = 6509739589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6513933593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3256966946 + 3256966947.

It is an arithmetic number, because the mean of its divisors is an integer number (3256966947).

Almost surely, 2^6513933893 is an apocalyptic number.

It is an amenable number.

6513933893 is a deficient number, since it is larger than the sum of its proper divisors (1).

6513933893 is an equidigital number, since it uses as much as digits as its factorization.

6513933893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 50.

The square root of 6513933893 is about 80708.9455574783. The cubic root of 6513933893 is about 1867.5881756450.

The spelling of 6513933893 in words is "six billion, five hundred thirteen million, nine hundred thirty-three thousand, eight hundred ninety-three".