8194644063 has 12 divisors (see below), whose sum is σ = 12088553568. Its totient is φ = 5346859680.

The previous prime is 8194644061. The next prime is 8194644097. The reversal of 8194644063 is 3604464918.

It is not a de Polignac number, because 8194644063 - 2¹ = 8194644061 is a prime.

It is a super-2 number, since 2×8194644063² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8194644061) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9685918 + ... + 9686763.

It is an arithmetic number, because the mean of its divisors is an integer number (1007379464).

Almost surely, 2^8194644063 is an apocalyptic number.

8194644063 is a deficient number, since it is larger than the sum of its proper divisors (3893909505).

8194644063 is a wasteful number, since it uses less digits than its factorization.

8194644063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19372734 (or 19372731 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 8194644063 is about 90524.2733359401. The cubic root of 8194644063 is about 2016.0905387048.

The spelling of 8194644063 in words is "eight billion, one hundred ninety-four million, six hundred forty-four thousand, sixty-three".