6819782164 has 24 divisors (see below), whose sum is σ = 13411480320. Its totient is φ = 3010739424.

The previous prime is 6819782161. The next prime is 6819782213. The reversal of 6819782164 is 4612879186.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6819782161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2849884 + ... + 2852275.

It is an arithmetic number, because the mean of its divisors is an integer number (558811680).

Almost surely, 2^6819782164 is an apocalyptic number.

It is an amenable number.

6819782164 is a deficient number, since it is larger than the sum of its proper divisors (6591698156).

6819782164 is a wasteful number, since it uses less digits than its factorization.

6819782164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702199 (or 5702197 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 6819782164 is about 82581.9723910733. The cubic root of 6819782164 is about 1896.3718541216.

The spelling of 6819782164 in words is "six billion, eight hundred nineteen million, seven hundred eighty-two thousand, one hundred sixty-four".