8428666619 has 2 divisors, whose sum is σ = 8428666620. Its totient is φ = 8428666618.

The previous prime is 8428666607. The next prime is 8428666667. The reversal of 8428666619 is 9166668248.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8428666619 is a prime.

It is a super-2 number, since 2×8428666619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8428666679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214333309 + 4214333310.

It is an arithmetic number, because the mean of its divisors is an integer number (4214333310).

Almost surely, 2^8428666619 is an apocalyptic number.

8428666619 is a deficient number, since it is larger than the sum of its proper divisors (1).

8428666619 is an equidigital number, since it uses as much as digits as its factorization.

8428666619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 56.

The square root of 8428666619 is about 91807.7699271690. The cubic root of 8428666619 is about 2035.1025203760.

The spelling of 8428666619 in words is "eight billion, four hundred twenty-eight million, six hundred sixty-six thousand, six hundred nineteen".