6493874869 has 2 divisors, whose sum is σ = 6493874870. Its totient is φ = 6493874868.

The previous prime is 6493874867. The next prime is 6493874879. The reversal of 6493874869 is 9684783946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6105390769 + 388484100 = 78137^2 + 19710^2 .

It is a cyclic number.

It is not a de Polignac number, because 6493874869 - 2¹ = 6493874867 is a prime.

It is a super-2 number, since 2×6493874869² = 84340821628459534322, which contains 22 as substring.

Together with 6493874867, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6493874869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6493874861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3246937434 + 3246937435.

It is an arithmetic number, because the mean of its divisors is an integer number (3246937435).

Almost surely, 2^6493874869 is an apocalyptic number.

It is an amenable number.

6493874869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6493874869 is an equidigital number, since it uses as much as digits as its factorization.

6493874869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 64.

The square root of 6493874869 is about 80584.5820799488. The cubic root of 6493874869 is about 1865.6691859789.

The spelling of 6493874869 in words is "six billion, four hundred ninety-three million, eight hundred seventy-four thousand, eight hundred sixty-nine".