2163600243 has 72 divisors (see below), whose sum is σ = 3854682000. Its totient is φ = 1162740096.

The previous prime is 2163600227. The next prime is 2163600289. The reversal of 2163600243 is 3420063612.

2163600243 is a `hidden beast` number, since 2 + 1 + 636 + 0 + 0 + 24 + 3 = 666.

It is not a de Polignac number, because 2163600243 - 2⁴ = 2163600227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2163600203) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1247605 + ... + 1249337.

It is an arithmetic number, because the mean of its divisors is an integer number (53537250).

Almost surely, 2^2163600243 is an apocalyptic number.

2163600243 is a deficient number, since it is larger than the sum of its proper divisors (1691081757).

2163600243 is a wasteful number, since it uses less digits than its factorization.

2163600243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 2163600243 is about 46514.5164760422. The cubic root of 2163600243 is about 1293.3786087364.

Adding to 2163600243 its reverse (3420063612), we get a palindrome (5583663855).

The spelling of 2163600243 in words is "two billion, one hundred sixty-three million, six hundred thousand, two hundred forty-three".