2045043968 has 72 divisors (see below), whose sum is σ = 4715262720. Its totient is φ = 874864640.

The previous prime is 2045043943. The next prime is 2045043977. The reversal of 2045043968 is 8693405402.

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, 26513 + ... + 69231.

It is an arithmetic number, because the mean of its divisors is an integer number (65489760).

Almost surely, 2^2045043968 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 2045043968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357631360).

2045043968 is an abundant number, since it is smaller than the sum of its proper divisors (2670218752).

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

2045043968 is a wasteful number, since it uses less digits than its factorization.

2045043968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42763 (or 42749 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 2045043968 is about 45222.1623543147. The cubic root of 2045043968 is about 1269.3095567108.

The spelling of 2045043968 in words is "two billion, forty-five million, forty-three thousand, nine hundred sixty-eight".