20013193 has 2 divisors, whose sum is σ = 20013194. Its totient is φ = 20013192.

The previous prime is 20013179. The next prime is 20013221. The reversal of 20013193 is 39131002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12766329 + 7246864 = 3573^2 + 2692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20013193.

It is not a weakly prime, because it can be changed into another prime (20013293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006596 + 10006597.

It is an arithmetic number, because the mean of its divisors is an integer number (10006597).

Almost surely, 2^20013193 is an apocalyptic number.

It is an amenable number.

20013193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013193 is an equidigital number, since it uses as much as digits as its factorization.

20013193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20013193 is about 4473.6107340715. The cubic root of 20013193 is about 271.5014340598.

Adding to 20013193 its reverse (39131002), we get a palindrome (59144195).

The spelling of 20013193 in words is "twenty million, thirteen thousand, one hundred ninety-three".