8081036809 has 2 divisors, whose sum is σ = 8081036810. Its totient is φ = 8081036808.

The previous prime is 8081036807. The next prime is 8081036849. The reversal of 8081036809 is 9086301808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7144982784 + 936054025 = 84528^2 + 30595^2 .

It is a cyclic number.

It is not a de Polignac number, because 8081036809 - 2¹ = 8081036807 is a prime.

Together with 8081036807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8081036807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040518404 + 4040518405.

It is an arithmetic number, because the mean of its divisors is an integer number (4040518405).

Almost surely, 2^8081036809 is an apocalyptic number.

It is an amenable number.

8081036809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8081036809 is an equidigital number, since it uses as much as digits as its factorization.

8081036809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 8081036809 is about 89894.5872063496. The cubic root of 8081036809 is about 2006.7303929160.

The spelling of 8081036809 in words is "eight billion, eighty-one million, thirty-six thousand, eight hundred nine".