2945782320 has 80 divisors (see below), whose sum is σ = 9834391392. Its totient is φ = 725114880.

The previous prime is 2945782319. The next prime is 2945782327. The reversal of 2945782320 is 232875492.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2945782327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468961 + ... + 475200.

Almost surely, 2^2945782320 is an apocalyptic number.

2945782320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2945782320 is an abundant number, since it is smaller than the sum of its proper divisors (6888609072).

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

2945782320 is a wasteful number, since it uses less digits than its factorization.

2945782320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944190 (or 944184 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 2945782320 is about 54275.0616766117. The cubic root of 2945782320 is about 1433.5083173183.

The spelling of 2945782320 in words is "two billion, nine hundred forty-five million, seven hundred eighty-two thousand, three hundred twenty".