8649481313 has 4 divisors (see below), whose sum is σ = 9435797808. Its totient is φ = 7863164820.

The previous prime is 8649481303. The next prime is 8649481327. The reversal of 8649481313 is 3131849468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8649481313 - 2⁴ = 8649481297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8649481303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393158231 + ... + 393158252.

It is an arithmetic number, because the mean of its divisors is an integer number (2358949452).

Almost surely, 2^8649481313 is an apocalyptic number.

It is an amenable number.

8649481313 is a deficient number, since it is larger than the sum of its proper divisors (786316495).

8649481313 is a wasteful number, since it uses less digits than its factorization.

8649481313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786316494.

The product of its digits is 497664, while the sum is 47.

The square root of 8649481313 is about 93002.5876683009. The cubic root of 8649481313 is about 2052.7214550063.

The spelling of 8649481313 in words is "eight billion, six hundred forty-nine million, four hundred eighty-one thousand, three hundred thirteen".