8481859409 has 2 divisors, whose sum is σ = 8481859410. Its totient is φ = 8481859408.

The previous prime is 8481859357. The next prime is 8481859423. The reversal of 8481859409 is 9049581848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8475964225 + 5895184 = 92065^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 8481859409 - 2⁸ = 8481859153 is a prime.

It is not a weakly prime, because it can be changed into another prime (8481859469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240929704 + 4240929705.

It is an arithmetic number, because the mean of its divisors is an integer number (4240929705).

Almost surely, 2^8481859409 is an apocalyptic number.

It is an amenable number.

8481859409 is a deficient number, since it is larger than the sum of its proper divisors (1).

8481859409 is an equidigital number, since it uses as much as digits as its factorization.

8481859409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 56.

The square root of 8481859409 is about 92097.0108581163. The cubic root of 8481859409 is about 2039.3746809062.

The spelling of 8481859409 in words is "eight billion, four hundred eighty-one million, eight hundred fifty-nine thousand, four hundred nine".