2991183664 has 40 divisors (see below), whose sum is σ = 6629282048. Its totient is φ = 1280784960.

The previous prime is 2991183647. The next prime is 2991183683. The reversal of 2991183664 is 4663811992.

It is a happy 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, 119749 + ... + 142555.

Almost surely, 2^2991183664 is an apocalyptic number.

It is an amenable number.

2991183664 is an abundant number, since it is smaller than the sum of its proper divisors (3638098384).

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

2991183664 is a wasteful number, since it uses less digits than its factorization.

2991183664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23993 (or 23987 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 2991183664 is about 54691.7147655840. The cubic root of 2991183664 is about 1440.8353666344.

The spelling of 2991183664 in words is "two billion, nine hundred ninety-one million, one hundred eighty-three thousand, six hundred sixty-four".