2163591863 has 2 divisors, whose sum is σ = 2163591864. Its totient is φ = 2163591862.

The previous prime is 2163591823. The next prime is 2163591889. The reversal of 2163591863 is 3681953612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2163591863 - 2¹⁶ = 2163526327 is a prime.

It is a super-2 number, since 2×2163591863² = 9362259499279621538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163591823) by changing a digit.

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 as a sum of consecutive naturals, namely, 1081795931 + 1081795932.

It is an arithmetic number, because the mean of its divisors is an integer number (1081795932).

Almost surely, 2^2163591863 is an apocalyptic number.

2163591863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163591863 is an equidigital number, since it uses as much as digits as its factorization.

2163591863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 2163591863 is about 46514.4263965493. The cubic root of 2163591863 is about 1293.3769389075.

The spelling of 2163591863 in words is "two billion, one hundred sixty-three million, five hundred ninety-one thousand, eight hundred sixty-three".