8034378509 has 2 divisors, whose sum is σ = 8034378510. Its totient is φ = 8034378508.

The previous prime is 8034378493. The next prime is 8034378553. The reversal of 8034378509 is 9058734308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7556824900 + 477553609 = 86930^2 + 21853^2 .

It is a cyclic number.

It is not a de Polignac number, because 8034378509 - 2⁴ = 8034378493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8034375509) 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, 4017189254 + 4017189255.

It is an arithmetic number, because the mean of its divisors is an integer number (4017189255).

Almost surely, 2^8034378509 is an apocalyptic number.

It is an amenable number.

8034378509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8034378509 is an equidigital number, since it uses as much as digits as its factorization.

8034378509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 8034378509 is about 89634.6947838838. The cubic root of 8034378509 is about 2002.8607817628.

The spelling of 8034378509 in words is "eight billion, thirty-four million, three hundred seventy-eight thousand, five hundred nine".