2163687868 has 6 divisors (see below), whose sum is σ = 3786453776. Its totient is φ = 1081843932.

The previous prime is 2163687857. The next prime is 2163687899. The reversal of 2163687868 is 8687863612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270460980 + ... + 270460987.

Almost surely, 2^2163687868 is an apocalyptic number.

It is an amenable number.

2163687868 is a deficient number, since it is larger than the sum of its proper divisors (1622765908).

2163687868 is a wasteful number, since it uses less digits than its factorization.

2163687868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540921971 (or 540921969 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 55.

The square root of 2163687868 is about 46515.4583767590. The cubic root of 2163687868 is about 1293.3960689506.

The spelling of 2163687868 in words is "two billion, one hundred sixty-three million, six hundred eighty-seven thousand, eight hundred sixty-eight".