2163205243 has 2 divisors, whose sum is σ = 2163205244. Its totient is φ = 2163205242.

The previous prime is 2163205211. The next prime is 2163205249. The reversal of 2163205243 is 3425023612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2163205243 - 2⁵ = 2163205211 is a prime.

It is not a weakly prime, because it can be changed into another prime (2163205249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081602621 + 1081602622.

It is an arithmetic number, because the mean of its divisors is an integer number (1081602622).

Almost surely, 2^2163205243 is an apocalyptic number.

2163205243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163205243 is an equidigital number, since it uses as much as digits as its factorization.

2163205243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2163205243 is about 46510.2702959250. The cubic root of 2163205243 is about 1293.2998949282.

Adding to 2163205243 its reverse (3425023612), we get a palindrome (5588228855).

The spelling of 2163205243 in words is "two billion, one hundred sixty-three million, two hundred five thousand, two hundred forty-three".