20016193 has 2 divisors, whose sum is σ = 20016194. Its totient is φ = 20016192.

The previous prime is 20016181. The next prime is 20016221. The reversal of 20016193 is 39161002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20007729 + 8464 = 4473^2 + 92^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20016193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20016103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008096 + 10008097.

It is an arithmetic number, because the mean of its divisors is an integer number (10008097).

Almost surely, 2^20016193 is an apocalyptic number.

It is an amenable number.

20016193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20016193 is an equidigital number, since it uses as much as digits as its factorization.

20016193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 20016193 is about 4473.9460211317. The cubic root of 20016193 is about 271.5149995048.

Adding to 20016193 its reverse (39161002), we get a palindrome (59177195).

The spelling of 20016193 in words is "twenty million, sixteen thousand, one hundred ninety-three".