8243005481 has 2 divisors, whose sum is σ = 8243005482. Its totient is φ = 8243005480.

The previous prime is 8243005417. The next prime is 8243005487. The reversal of 8243005481 is 1845003428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8156979856 + 86025625 = 90316^2 + 9275^2 .

It is a cyclic number.

It is not a de Polignac number, because 8243005481 - 2⁶ = 8243005417 is a prime.

It is a super-2 number, since 2×8243005481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8243005487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121502740 + 4121502741.

It is an arithmetic number, because the mean of its divisors is an integer number (4121502741).

Almost surely, 2^8243005481 is an apocalyptic number.

It is an amenable number.

8243005481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8243005481 is an equidigital number, since it uses as much as digits as its factorization.

8243005481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 8243005481 is about 90790.9988985692. The cubic root of 8243005481 is about 2020.0488078427.

The spelling of 8243005481 in words is "eight billion, two hundred forty-three million, five thousand, four hundred eighty-one".