2141791866 has 24 divisors (see below), whose sum is σ = 4753734804. Its totient is φ = 696517440.

The previous prime is 2141791811. The next prime is 2141791877. The reversal of 2141791866 is 6681971412.

It can be written as a sum of positive squares in 2 ways, for example, as 1868054841 + 273737025 = 43221^2 + 16545^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1450341 + ... + 1451816.

Almost surely, 2^2141791866 is an apocalyptic number.

2141791866 is an abundant number, since it is smaller than the sum of its proper divisors (2611942938).

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

2141791866 is a wasteful number, since it uses less digits than its factorization.

2141791866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902206 (or 2902203 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2141791866 is about 46279.4972531033. The cubic root of 2141791866 is about 1289.0183156884.

The spelling of 2141791866 in words is "two billion, one hundred forty-one million, seven hundred ninety-one thousand, eight hundred sixty-six".