2945643072 has 56 divisors (see below), whose sum is σ = 7810195200. Its totient is φ = 979800576.

The previous prime is 2945643053. The next prime is 2945643089. The reversal of 2945643072 is 2703465492.

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, 75954 + ... + 107982.

Almost surely, 2^2945643072 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 2945643072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3905097600).

2945643072 is an abundant number, since it is smaller than the sum of its proper divisors (4864552128).

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

2945643072 is a wasteful number, since it uses less digits than its factorization.

2945643072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32523 (or 32513 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 2945643072 is about 54273.7788623567. The cubic root of 2945643072 is about 1433.4857295086.

The spelling of 2945643072 in words is "two billion, nine hundred forty-five million, six hundred forty-three thousand, seventy-two".