4404921918 has 32 divisors (see below), whose sum is σ = 9364421664. Its totient is φ = 1376550912.

The previous prime is 4404921821. The next prime is 4404921923. The reversal of 4404921918 is 8191294044.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4404921918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57805 + ... + 110232.

It is an arithmetic number, because the mean of its divisors is an integer number (292638177).

Almost surely, 2^4404921918 is an apocalyptic number.

4404921918 is an abundant number, since it is smaller than the sum of its proper divisors (4959499746).

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

4404921918 is a wasteful number, since it uses less digits than its factorization.

4404921918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168316.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 4404921918 is about 66369.5857904809. The cubic root of 4404921918 is about 1639.2533183809.

The spelling of 4404921918 in words is "four billion, four hundred four million, nine hundred twenty-one thousand, nine hundred eighteen".