2143666730 has 16 divisors (see below), whose sum is σ = 3905090784. Its totient is φ = 847135440.

The previous prime is 2143666717. The next prime is 2143666739. The reversal of 2143666730 is 376663412.

It is not an unprimeable number, because it can be changed into a prime (2143666739) by changing a digit.

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, 1290536 + ... + 1292195.

It is an arithmetic number, because the mean of its divisors is an integer number (244068174).

Almost surely, 2^2143666730 is an apocalyptic number.

2143666730 is a deficient number, since it is larger than the sum of its proper divisors (1761424054).

2143666730 is a wasteful number, since it uses less digits than its factorization.

2143666730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582821.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 2143666730 is about 46299.7487034217. The cubic root of 2143666730 is about 1289.3943293799.

The spelling of 2143666730 in words is "two billion, one hundred forty-three million, six hundred sixty-six thousand, seven hundred thirty".