4073890816 has 66 divisors (see below), whose sum is σ = 8325382358. Its totient is φ = 1992499200.

The previous prime is 4073890811. The next prime is 4073890817. The reversal of 4073890816 is 6180983704.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2770969600 + 1302921216 = 52640^2 + 36096^2 .

It is not an unprimeable number, because it can be changed into a prime (4073890811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2261116 + ... + 2262916.

Almost surely, 2^4073890816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4073890816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4162691179).

4073890816 is an abundant number, since it is smaller than the sum of its proper divisors (4251491542).

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

4073890816 is an equidigital number, since it uses as much as digits as its factorization.

4073890816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 4073890816 is about 63827.0382831602. The cubic root of 4073890816 is about 1597.1160047304.

The spelling of 4073890816 in words is "four billion, seventy-three million, eight hundred ninety thousand, eight hundred sixteen".