6814844549 has 4 divisors (see below), whose sum is σ = 6820756236. Its totient is φ = 6808932864.

The previous prime is 6814844539. The next prime is 6814844573. The reversal of 6814844549 is 9454484186.

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 6031852225 + 782992324 = 77665^2 + 27982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6814844549 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 6814844549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6814844539) 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, 2954114 + ... + 2956419.

It is an arithmetic number, because the mean of its divisors is an integer number (1705189059).

Almost surely, 2^6814844549 is an apocalyptic number.

It is an amenable number.

6814844549 is a deficient number, since it is larger than the sum of its proper divisors (5911687).

6814844549 is a wasteful number, since it uses less digits than its factorization.

6814844549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911686.

The product of its digits is 4423680, while the sum is 53.

The square root of 6814844549 is about 82552.0717426280. The cubic root of 6814844549 is about 1895.9140772905.

The spelling of 6814844549 in words is "six billion, eight hundred fourteen million, eight hundred forty-four thousand, five hundred forty-nine".