2991668886 has 24 divisors (see below), whose sum is σ = 6518168280. Its totient is φ = 991650816.

The previous prime is 2991668879. The next prime is 2991668909. The reversal of 2991668886 is 6888661992.

2991668886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 461035 + ... + 467478.

It is an arithmetic number, because the mean of its divisors is an integer number (271590345).

Almost surely, 2^2991668886 is an apocalyptic number.

2991668886 is an abundant number, since it is smaller than the sum of its proper divisors (3526499394).

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

2991668886 is a wasteful number, since it uses less digits than its factorization.

2991668886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928700 (or 928697 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 2991668886 is about 54696.1505592487. The cubic root of 2991668886 is about 1440.9132719385.

The spelling of 2991668886 in words is "two billion, nine hundred ninety-one million, six hundred sixty-eight thousand, eight hundred eighty-six".