8491184665 has 16 divisors (see below), whose sum is σ = 10441274256. Its totient is φ = 6625152000.

The previous prime is 8491184629. The next prime is 8491184677. The reversal of 8491184665 is 5664811948.

It can be written as a sum of positive squares in 8 ways, for example, as 813219289 + 7677965376 = 28517^2 + 87624^2 .

It is not a de Polignac number, because 8491184665 - 2²³ = 8482796057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044115 + ... + 1052215.

It is an arithmetic number, because the mean of its divisors is an integer number (652579641).

Almost surely, 2^8491184665 is an apocalyptic number.

It is an amenable number.

8491184665 is a deficient number, since it is larger than the sum of its proper divisors (1950089591).

8491184665 is a wasteful number, since it uses less digits than its factorization.

8491184665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13260.

The product of its digits is 1658880, while the sum is 52.

The square root of 8491184665 is about 92147.6243046993. The cubic root of 8491184665 is about 2040.1217940388.

The spelling of 8491184665 in words is "eight billion, four hundred ninety-one million, one hundred eighty-four thousand, six hundred sixty-five".