2143688268 has 12 divisors (see below), whose sum is σ = 5001939320. Its totient is φ = 714562752.

The previous prime is 2143688257. The next prime is 2143688293. The reversal of 2143688268 is 8628863412.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 89320333 + ... + 89320356.

Almost surely, 2^2143688268 is an apocalyptic number.

It is an amenable number.

2143688268 is an abundant number, since it is smaller than the sum of its proper divisors (2858251052).

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

2143688268 is a wasteful number, since it uses less digits than its factorization.

2143688268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178640696 (or 178640694 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 2143688268 is about 46299.9812958926. The cubic root of 2143688268 is about 1289.3986476634.

The spelling of 2143688268 in words is "two billion, one hundred forty-three million, six hundred eighty-eight thousand, two hundred sixty-eight".