6819782160 has 80 divisors (see below), whose sum is σ = 21209535360. Its totient is φ = 1812741120.

The previous prime is 6819782149. The next prime is 6819782161. The reversal of 6819782160 is 612879186.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28956 + ... + 120324.

It is an arithmetic number, because the mean of its divisors is an integer number (265119192).

Almost surely, 2^6819782160 is an apocalyptic number.

6819782160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6819782160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10604767680).

6819782160 is an abundant number, since it is smaller than the sum of its proper divisors (14389753200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6819782160 is a wasteful number, since it uses less digits than its factorization.

6819782160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91696 (or 91690 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 6819782160 is about 82581.9723668550. The cubic root of 6819782160 is about 1896.3718537508.

The spelling of 6819782160 in words is "six billion, eight hundred nineteen million, seven hundred eighty-two thousand, one hundred sixty".