2163686468 has 24 divisors (see below), whose sum is σ = 3855116160. Its totient is φ = 1062267680.

The previous prime is 2163686461. The next prime is 2163686471. The reversal of 2163686468 is 8646863612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2163686461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217205 + ... + 226947.

It is an arithmetic number, because the mean of its divisors is an integer number (160629840).

Almost surely, 2^2163686468 is an apocalyptic number.

It is an amenable number.

2163686468 is a deficient number, since it is larger than the sum of its proper divisors (1691429692).

2163686468 is a wasteful number, since it uses less digits than its factorization.

2163686468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10747 (or 10745 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 2163686468 is about 46515.4433279959. The cubic root of 2163686468 is about 1293.3957899894.

The spelling of 2163686468 in words is "two billion, one hundred sixty-three million, six hundred eighty-six thousand, four hundred sixty-eight".