2991937968 has 60 divisors (see below), whose sum is σ = 8643389248. Its totient is φ = 965139840.

The previous prime is 2991937909. The next prime is 2991937969. The reversal of 2991937968 is 8697391992.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2991937969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330655 + ... + 339582.

Almost surely, 2^2991937968 is an apocalyptic number.

It is an amenable number.

2991937968 is an abundant number, since it is smaller than the sum of its proper divisors (5651451280).

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

2991937968 is a wasteful number, since it uses less digits than its factorization.

2991937968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670282 (or 670273 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 2991937968 is about 54698.6102931327. The cubic root of 2991937968 is about 1440.9564710375.

The spelling of 2991937968 in words is "two billion, nine hundred ninety-one million, nine hundred thirty-seven thousand, nine hundred sixty-eight".