8219438019 has 48 divisors (see below), whose sum is σ = 13472761120. Its totient is φ = 4786905600.

The previous prime is 8219437999. The next prime is 8219438027. The reversal of 8219438019 is 9108349128.

8219438019 is a `hidden beast` number, since 82 + 194 + 380 + 1 + 9 = 666.

8219438019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8219438019 - 2⁹ = 8219437507 is a prime.

It is a super-2 number, since 2×8219438019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8219438039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4002597 + ... + 4004649.

Almost surely, 2^8219438019 is an apocalyptic number.

8219438019 is a deficient number, since it is larger than the sum of its proper divisors (5253323101).

8219438019 is a wasteful number, since it uses less digits than its factorization.

8219438019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892 (or 3889 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 8219438019 is about 90661.1163564623. The cubic root of 8219438019 is about 2018.1218057287.

The spelling of 8219438019 in words is "eight billion, two hundred nineteen million, four hundred thirty-eight thousand, nineteen".