6457849369 has 4 divisors (see below), whose sum is σ = 6680533860. Its totient is φ = 6235164880.

The previous prime is 6457849309. The next prime is 6457849393. The reversal of 6457849369 is 9639487546.

6457849369 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4908403600 + 1549445769 = 70060^2 + 39363^2 .

It is a cyclic number.

It is not a de Polignac number, because 6457849369 - 2¹¹ = 6457847321 is a prime.

It is a super-2 number, since 2×6457849369² = 83407636945387396322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6457849309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111342202 + ... + 111342259.

It is an arithmetic number, because the mean of its divisors is an integer number (1670133465).

Almost surely, 2^6457849369 is an apocalyptic number.

It is an amenable number.

6457849369 is a deficient number, since it is larger than the sum of its proper divisors (222684491).

6457849369 is a wasteful number, since it uses less digits than its factorization.

6457849369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222684490.

The product of its digits is 39191040, while the sum is 61.

The square root of 6457849369 is about 80360.7451993820. The cubic root of 6457849369 is about 1862.2127833850.

The spelling of 6457849369 in words is "six billion, four hundred fifty-seven million, eight hundred forty-nine thousand, three hundred sixty-nine".