2141730666 has 64 divisors (see below), whose sum is σ = 4925030400. Its totient is φ = 689180400.

The previous prime is 2141730637. The next prime is 2141730671. The reversal of 2141730666 is 6660371412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2141730666.

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 31 ways as a sum of consecutive naturals, for example, 800511 + ... + 803181.

It is an arithmetic number, because the mean of its divisors is an integer number (76953600).

Almost surely, 2^2141730666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2141730666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462515200).

2141730666 is an abundant number, since it is smaller than the sum of its proper divisors (2783299734).

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

2141730666 is a wasteful number, since it uses less digits than its factorization.

2141730666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 2141730666 is about 46278.8360484574. The cubic root of 2141730666 is about 1289.0060380136.

The spelling of 2141730666 in words is "two billion, one hundred forty-one million, seven hundred thirty thousand, six hundred sixty-six".