20893330193 has 2 divisors, whose sum is σ = 20893330194. Its totient is φ = 20893330192.

The previous prime is 20893330187. The next prime is 20893330253. The reversal of 20893330193 is 39103339802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14625757969 + 6267572224 = 120937^2 + 79168^2 .

It is a cyclic number.

It is not a de Polignac number, because 20893330193 - 2⁴ = 20893330177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20893330193.

It is not a weakly prime, because it can be changed into another prime (20893330093) 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, 10446665096 + 10446665097.

It is an arithmetic number, because the mean of its divisors is an integer number (10446665097).

Almost surely, 2^20893330193 is an apocalyptic number.

It is an amenable number.

20893330193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20893330193 is an equidigital number, since it uses as much as digits as its factorization.

20893330193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 41.

Adding to 20893330193 its reverse (39103339802), we get a palindrome (59996669995).

The spelling of 20893330193 in words is "twenty billion, eight hundred ninety-three million, three hundred thirty thousand, one hundred ninety-three".