2989191966 has 16 divisors (see below), whose sum is σ = 5987718288. Its totient is φ = 994841600.

The previous prime is 2989191937. The next prime is 2989191973. The reversal of 2989191966 is 6691919892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384765 + ... + 392456.

It is an arithmetic number, because the mean of its divisors is an integer number (374232393).

Almost surely, 2^2989191966 is an apocalyptic number.

2989191966 is an abundant number, since it is smaller than the sum of its proper divisors (2998526322).

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

2989191966 is a wasteful number, since it uses less digits than its factorization.

2989191966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777867.

The product of its digits is 3779136, while the sum is 60.

The square root of 2989191966 is about 54673.5033265658. The cubic root of 2989191966 is about 1440.5154992715.

The spelling of 2989191966 in words is "two billion, nine hundred eighty-nine million, one hundred ninety-one thousand, nine hundred sixty-six".