8219878219 has 8 divisors (see below), whose sum is σ = 9409476320. Its totient is φ = 7034112576.

The previous prime is 8219878213. The next prime is 8219878223. The reversal of 8219878219 is 9128789128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8219878219 - 2⁵ = 8219878187 is a prime.

It is a super-2 number, since 2×8219878219² (a number of 21 digits) contains 22 as substring.

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 8219878219.

It is not an unprimeable number, because it can be changed into a prime (8219878213) 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 7 ways as a sum of consecutive naturals, for example, 953514 + ... + 962095.

It is an arithmetic number, because the mean of its divisors is an integer number (1176184540).

Almost surely, 2^8219878219 is an apocalyptic number.

8219878219 is a deficient number, since it is larger than the sum of its proper divisors (1189598101).

8219878219 is a wasteful number, since it uses less digits than its factorization.

8219878219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916229.

The product of its digits is 1161216, while the sum is 55.

The square root of 8219878219 is about 90663.5440461049. The cubic root of 8219878219 is about 2018.1578325778.

The spelling of 8219878219 in words is "eight billion, two hundred nineteen million, eight hundred seventy-eight thousand, two hundred nineteen".