1663804422 has 64 divisors (see below), whose sum is σ = 4232563200. Its totient is φ = 474582240.

The previous prime is 1663804421. The next prime is 1663804447. The reversal of 1663804422 is 2244083661.

1663804422 is a `hidden beast` number, since 16 + 638 + 0 + 4 + 4 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663804421) 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 31 ways as a sum of consecutive naturals, for example, 246529 + ... + 253187.

It is an arithmetic number, because the mean of its divisors is an integer number (66133800).

Almost surely, 2^1663804422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663804422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116281600).

1663804422 is an abundant number, since it is smaller than the sum of its proper divisors (2568758778).

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

1663804422 is a wasteful number, since it uses less digits than its factorization.

1663804422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338 (or 7332 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1663804422 is about 40789.7587882056. The cubic root of 1663804422 is about 1184.9519993375.

The spelling of 1663804422 in words is "one billion, six hundred sixty-three million, eight hundred four thousand, four hundred twenty-two".