8340778619 has 2 divisors, whose sum is σ = 8340778620. Its totient is φ = 8340778618.

The previous prime is 8340778609. The next prime is 8340778639. The reversal of 8340778619 is 9168770438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8340778619 - 2⁴ = 8340778603 is a prime.

It is a super-2 number, since 2×8340778619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8340778609) 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 as a sum of consecutive naturals, namely, 4170389309 + 4170389310.

It is an arithmetic number, because the mean of its divisors is an integer number (4170389310).

Almost surely, 2^8340778619 is an apocalyptic number.

8340778619 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340778619 is an equidigital number, since it uses as much as digits as its factorization.

8340778619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 8340778619 is about 91327.8633222085. The cubic root of 8340778619 is about 2028.0042685514.

The spelling of 8340778619 in words is "eight billion, three hundred forty million, seven hundred seventy-eight thousand, six hundred nineteen".