8462581609 has 2 divisors, whose sum is σ = 8462581610. Its totient is φ = 8462581608.

The previous prime is 8462581591. The next prime is 8462581679. The reversal of 8462581609 is 9061852648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4784765584 + 3677816025 = 69172^2 + 60645^2 .

It is a cyclic number.

It is not a de Polignac number, because 8462581609 - 2¹¹ = 8462579561 is a prime.

It is not a weakly prime, because it can be changed into another prime (8462581679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4231290804 + 4231290805.

It is an arithmetic number, because the mean of its divisors is an integer number (4231290805).

Almost surely, 2^8462581609 is an apocalyptic number.

It is an amenable number.

8462581609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8462581609 is an equidigital number, since it uses as much as digits as its factorization.

8462581609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 8462581609 is about 91992.2910302814. The cubic root of 8462581609 is about 2037.8284601963.

The spelling of 8462581609 in words is "eight billion, four hundred sixty-two million, five hundred eighty-one thousand, six hundred nine".