2221943946 has 8 divisors (see below), whose sum is σ = 4443887904. Its totient is φ = 740647980.

The previous prime is 2221943909. The next prime is 2221943951. The reversal of 2221943946 is 6493491222.

It is a sphenic number, since it is the product of 3 distinct primes.

2221943946 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2221943898 and 2221943907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185161990 + ... + 185162001.

It is an arithmetic number, because the mean of its divisors is an integer number (555485988).

Almost surely, 2^2221943946 is an apocalyptic number.

2221943946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2221943946 is a wasteful number, since it uses less digits than its factorization.

2221943946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370323996.

The product of its digits is 186624, while the sum is 42.

The square root of 2221943946 is about 47137.5004216388. The cubic root of 2221943946 is about 1304.9014073869.

The spelling of 2221943946 in words is "two billion, two hundred twenty-one million, nine hundred forty-three thousand, nine hundred forty-six".