2143303994 has 32 divisors (see below), whose sum is σ = 3536555904. Its totient is φ = 968086080.

The previous prime is 2143303993. The next prime is 2143304077. The reversal of 2143303994 is 4993033412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2143303993) 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 15 ways as a sum of consecutive naturals, for example, 608699 + ... + 612209.

It is an arithmetic number, because the mean of its divisors is an integer number (110517372).

Almost surely, 2^2143303994 is an apocalyptic number.

2143303994 is a deficient number, since it is larger than the sum of its proper divisors (1393251910).

2143303994 is a wasteful number, since it uses less digits than its factorization.

2143303994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 2143303994 is about 46295.8312810128. The cubic root of 2143303994 is about 1289.3215979057.

The spelling of 2143303994 in words is "two billion, one hundred forty-three million, three hundred three thousand, nine hundred ninety-four".