20163492893 has 2 divisors, whose sum is σ = 20163492894. Its totient is φ = 20163492892.

The previous prime is 20163492871. The next prime is 20163492941. The reversal of 20163492893 is 39829436102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17481599524 + 2681893369 = 132218^2 + 51787^2 .

It is a cyclic number.

It is not a de Polignac number, because 20163492893 - 2¹⁶ = 20163427357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20163492803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10081746446 + 10081746447.

It is an arithmetic number, because the mean of its divisors is an integer number (10081746447).

Almost surely, 2^20163492893 is an apocalyptic number.

It is an amenable number.

20163492893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20163492893 is an equidigital number, since it uses as much as digits as its factorization.

20163492893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 20163492893 in words is "twenty billion, one hundred sixty-three million, four hundred ninety-two thousand, eight hundred ninety-three".