8945764643 has 8 divisors (see below), whose sum is σ = 9235908480. Its totient is φ = 8655719040.

The previous prime is 8945764637. The next prime is 8945764669. The reversal of 8945764643 is 3464675498.

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 8945764643 - 2⁶ = 8945764579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8945764603) 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, 190571 + ... + 232827.

It is an arithmetic number, because the mean of its divisors is an integer number (1154488560).

Almost surely, 2^8945764643 is an apocalyptic number.

8945764643 is a deficient number, since it is larger than the sum of its proper divisors (290143837).

8945764643 is a wasteful number, since it uses less digits than its factorization.

8945764643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49117.

The product of its digits is 17418240, while the sum is 56.

The square root of 8945764643 is about 94582.0524359669. The cubic root of 8945764643 is about 2075.8971022360.

The spelling of 8945764643 in words is "eight billion, nine hundred forty-five million, seven hundred sixty-four thousand, six hundred forty-three".