6879781219 has 2 divisors, whose sum is σ = 6879781220. Its totient is φ = 6879781218.

The previous prime is 6879781211. The next prime is 6879781241. The reversal of 6879781219 is 9121879786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6879781219 - 2³ = 6879781211 is a prime.

It is a super-2 number, since 2×6879781219² = 94662779242610251922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6879781211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439890609 + 3439890610.

It is an arithmetic number, because the mean of its divisors is an integer number (3439890610).

Almost surely, 2^6879781219 is an apocalyptic number.

6879781219 is a deficient number, since it is larger than the sum of its proper divisors (1).

6879781219 is an equidigital number, since it uses as much as digits as its factorization.

6879781219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 58.

The square root of 6879781219 is about 82944.4465832403. The cubic root of 6879781219 is about 1901.9169221413.

The spelling of 6879781219 in words is "six billion, eight hundred seventy-nine million, seven hundred eighty-one thousand, two hundred nineteen".