6513894763 has 4 divisors (see below), whose sum is σ = 6520631920. Its totient is φ = 6507157608.

The previous prime is 6513894727. The next prime is 6513894817. The reversal of 6513894763 is 3674983156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6513894763 - 2²⁵ = 6480340331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6513894763.

It is not an unprimeable number, because it can be changed into a prime (6513894713) 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 3 ways as a sum of consecutive naturals, for example, 3367128 + ... + 3369061.

It is an arithmetic number, because the mean of its divisors is an integer number (1630157980).

Almost surely, 2^6513894763 is an apocalyptic number.

6513894763 is a deficient number, since it is larger than the sum of its proper divisors (6737157).

6513894763 is an equidigital number, since it uses as much as digits as its factorization.

6513894763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737156.

The product of its digits is 3265920, while the sum is 52.

The square root of 6513894763 is about 80708.7031428458. The cubic root of 6513894763 is about 1867.5844360271.

The spelling of 6513894763 in words is "six billion, five hundred thirteen million, eight hundred ninety-four thousand, seven hundred sixty-three".