6448163922 has 54 divisors (see below), whose sum is σ = 14528356869. Its totient is φ = 2146321800.

The previous prime is 6448163737. The next prime is 6448163923. The reversal of 6448163922 is 2293618446.

6448163922 is a `hidden beast` number, since 6 + 4 + 4 + 8 + 1 + 639 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5445111681 + 1003052241 = 73791^2 + 31671^2 .

It is a tau number, because it is divible by the number of its divisors (54).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=56781.

It is not an unprimeable number, because it can be changed into a prime (6448163923) 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 26 ways as a sum of consecutive naturals, for example, 9198172 + ... + 9198872.

Almost surely, 2^6448163922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6448163922

6448163922 is an abundant number, since it is smaller than the sum of its proper divisors (8080192947).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6448163922 is an frugal number, since it uses more digits than its factorization.

6448163922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 706 counting only the distinct ones).

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

The square root of 6448163922 is about 80300.4602851067. The cubic root of 6448163922 is about 1861.2813387377.

The spelling of 6448163922 in words is "six billion, four hundred forty-eight million, one hundred sixty-three thousand, nine hundred twenty-two".