2163924869 has 2 divisors, whose sum is σ = 2163924870. Its totient is φ = 2163924868.

The previous prime is 2163924857. The next prime is 2163924901. The reversal of 2163924869 is 9684293612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2163180100 + 744769 = 46510^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163924869 - 2⁴ = 2163924853 is a prime.

It is a super-2 number, since 2×2163924869² = 9365141677353334322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163924809) 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, 1081962434 + 1081962435.

It is an arithmetic number, because the mean of its divisors is an integer number (1081962435).

Almost surely, 2^2163924869 is an apocalyptic number.

It is an amenable number.

2163924869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163924869 is an equidigital number, since it uses as much as digits as its factorization.

2163924869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 2163924869 is about 46518.0058579471. The cubic root of 2163924869 is about 1293.4432915613.

The spelling of 2163924869 in words is "two billion, one hundred sixty-three million, nine hundred twenty-four thousand, eight hundred sixty-nine".