8641963309 has 8 divisors (see below), whose sum is σ = 10023940928. Its totient is φ = 7296838560.

The previous prime is 8641963289. The next prime is 8641963327. The reversal of 8641963309 is 9033691468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8641963309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8641963009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9212712 + ... + 9213649.

It is an arithmetic number, because the mean of its divisors is an integer number (1252992616).

Almost surely, 2^8641963309 is an apocalyptic number.

It is an amenable number.

8641963309 is a deficient number, since it is larger than the sum of its proper divisors (1381977619).

8641963309 is a wasteful number, since it uses less digits than its factorization.

8641963309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18426435.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 8641963309 is about 92962.1606300112. The cubic root of 8641963309 is about 2052.1265506836.

The spelling of 8641963309 in words is "eight billion, six hundred forty-one million, nine hundred sixty-three thousand, three hundred nine".