8219058605 has 4 divisors (see below), whose sum is σ = 9862870332. Its totient is φ = 6575246880.

The previous prime is 8219058599. The next prime is 8219058607. The reversal of 8219058605 is 5068509128.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4255474756 + 3963583849 = 65234^2 + 62957^2 .

It is not a de Polignac number, because 8219058605 - 2⁶ = 8219058541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8219058607) 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 3 ways as a sum of consecutive naturals, for example, 821905856 + ... + 821905865.

It is an arithmetic number, because the mean of its divisors is an integer number (2465717583).

Almost surely, 2^8219058605 is an apocalyptic number.

It is an amenable number.

8219058605 is a deficient number, since it is larger than the sum of its proper divisors (1643811727).

8219058605 is a wasteful number, since it uses less digits than its factorization.

8219058605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643811726.

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 8219058605 is about 90659.0238476016. The cubic root of 8219058605 is about 2018.0907526954.

The spelling of 8219058605 in words is "eight billion, two hundred nineteen million, fifty-eight thousand, six hundred five".