2221838804 has 24 divisors (see below), whose sum is σ = 3980558568. Its totient is φ = 1084838400.

The previous prime is 2221838797. The next prime is 2221838813. The reversal of 2221838804 is 4088381222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1017610000 + 1204228804 = 31900^2 + 34702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8177 + ... + 67160.

It is an arithmetic number, because the mean of its divisors is an integer number (165856607).

Almost surely, 2^2221838804 is an apocalyptic number.

It is an amenable number.

2221838804 is a deficient number, since it is larger than the sum of its proper divisors (1758719764).

2221838804 is a wasteful number, since it uses less digits than its factorization.

2221838804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75515 (or 75513 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 2221838804 is about 47136.3851392955. The cubic root of 2221838804 is about 1304.8808244932.

The spelling of 2221838804 in words is "two billion, two hundred twenty-one million, eight hundred thirty-eight thousand, eight hundred four".