6818454893 has 16 divisors (see below), whose sum is σ = 7233240000. Its totient is φ = 6409383552.

The previous prime is 6818454887. The next prime is 6818454901. The reversal of 6818454893 is 3984548186.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6818454893 - 2⁸ = 6818454637 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818454803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3128078 + ... + 3130256.

It is an arithmetic number, because the mean of its divisors is an integer number (452077500).

Almost surely, 2^6818454893 is an apocalyptic number.

It is an amenable number.

6818454893 is a deficient number, since it is larger than the sum of its proper divisors (414785107).

6818454893 is a wasteful number, since it uses less digits than its factorization.

6818454893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404.

The product of its digits is 6635520, while the sum is 56.

The square root of 6818454893 is about 82573.9359180607. The cubic root of 6818454893 is about 1896.2488217132.

The spelling of 6818454893 in words is "six billion, eight hundred eighteen million, four hundred fifty-four thousand, eight hundred ninety-three".