8481120649 has 27 divisors (see below), whose sum is σ = 9270206631. Its totient is φ = 7757914320.

The previous prime is 8481120623. The next prime is 8481120737. The reversal of 8481120649 is 9460211848.

The square root of 8481120649 is 92093.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7589023225 + 892097424 = 87115^2 + 29868^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8481120649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8481120449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 64741314 + ... + 64741444.

Almost surely, 2^8481120649 is an apocalyptic number.

8481120649 is the 92093-rd square number.

8481120649 is the 46047-th centered octagonal number.

It is an amenable number.

8481120649 is a deficient number, since it is larger than the sum of its proper divisors (789085982).

8481120649 is an equidigital number, since it uses as much as digits as its factorization.

8481120649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The cubic root of 8481120649 is about 2039.3154701400.

The spelling of 8481120649 in words is "eight billion, four hundred eighty-one million, one hundred twenty thousand, six hundred forty-nine".