2991183648 has 24 divisors (see below), whose sum is σ = 7851857328. Its totient is φ = 997061184.

The previous prime is 2991183647. The next prime is 2991183683. The reversal of 2991183648 is 8463811992.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2991183648.

It is not an unprimeable number, because it can be changed into a prime (2991183641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15578986 + ... + 15579177.

It is an arithmetic number, because the mean of its divisors is an integer number (327160722).

Almost surely, 2^2991183648 is an apocalyptic number.

It is an amenable number.

2991183648 is an abundant number, since it is smaller than the sum of its proper divisors (4860673680).

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

2991183648 is a wasteful number, since it uses less digits than its factorization.

2991183648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31158176 (or 31158168 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 2991183648 is about 54691.7146193096. The cubic root of 2991183648 is about 1440.8353640654.

The spelling of 2991183648 in words is "two billion, nine hundred ninety-one million, one hundred eighty-three thousand, six hundred forty-eight".