8640958161 has 8 divisors (see below), whose sum is σ = 12568666464. Its totient is φ = 5236944320.

The previous prime is 8640958153. The next prime is 8640958163. The reversal of 8640958161 is 1618590468.

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

It is a cyclic number.

It is not a de Polignac number, because 8640958161 - 2³ = 8640958153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8640958161.

It is not an unprimeable number, because it can be changed into a prime (8640958163) 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 7 ways as a sum of consecutive naturals, for example, 130923576 + ... + 130923641.

It is an arithmetic number, because the mean of its divisors is an integer number (1571083308).

Almost surely, 2^8640958161 is an apocalyptic number.

It is an amenable number.

8640958161 is a deficient number, since it is larger than the sum of its proper divisors (3927708303).

8640958161 is a wasteful number, since it uses less digits than its factorization.

8640958161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261847231.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 8640958161 is about 92956.7542516411. The cubic root of 8640958161 is about 2052.0469865537.

The spelling of 8640958161 in words is "eight billion, six hundred forty million, nine hundred fifty-eight thousand, one hundred sixty-one".