8219919011 has 4 divisors (see below), whose sum is σ = 8296740792. Its totient is φ = 8143097232.

The previous prime is 8219918957. The next prime is 8219919077. The reversal of 8219919011 is 1109199128.

8219919011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8219919011 is a prime.

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 8219919011.

It is not an unprimeable number, because it can be changed into a prime (8219919511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38410730 + ... + 38410943.

It is an arithmetic number, because the mean of its divisors is an integer number (2074185198).

Almost surely, 2^8219919011 is an apocalyptic number.

8219919011 is a deficient number, since it is larger than the sum of its proper divisors (76821781).

8219919011 is a wasteful number, since it uses less digits than its factorization.

8219919011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76821780.

The product of its (nonzero) digits is 11664, while the sum is 41.

The square root of 8219919011 is about 90663.7690094560. The cubic root of 8219919011 is about 2018.1611710116.

The spelling of 8219919011 in words is "eight billion, two hundred nineteen million, nine hundred nineteen thousand, eleven".