1643484222 has 32 divisors (see below), whose sum is σ = 3657257760. Its totient is φ = 547067520.

The previous prime is 1643484187. The next prime is 1643484229. The reversal of 1643484222 is 2224843461.

1643484222 is a `hidden beast` number, since 1 + 643 + 4 + 8 + 4 + 2 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1643484229) 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 15 ways as a sum of consecutive naturals, for example, 18822 + ... + 60342.

It is an arithmetic number, because the mean of its divisors is an integer number (114289305).

Almost surely, 2^1643484222 is an apocalyptic number.

1643484222 is an abundant number, since it is smaller than the sum of its proper divisors (2013773538).

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

1643484222 is a wasteful number, since it uses less digits than its factorization.

1643484222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42265 (or 42259 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 1643484222 is about 40539.9090033513. The cubic root of 1643484222 is about 1180.1082496689.

The spelling of 1643484222 in words is "one billion, six hundred forty-three million, four hundred eighty-four thousand, two hundred twenty-two".