19080205 has 8 divisors (see below), whose sum is σ = 24243192. Its totient is φ = 14366208.

The previous prime is 19080203. The next prime is 19080227. The reversal of 19080205 is 50208091.

It can be written as a sum of positive squares in 4 ways, for example, as 4380649 + 14699556 = 2093^2 + 3834^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19080205 - 2¹ = 19080203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19080205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19080203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112152 + ... + 112321.

It is an arithmetic number, because the mean of its divisors is an integer number (3030399).

Almost surely, 2^19080205 is an apocalyptic number.

It is an amenable number.

19080205 is a deficient number, since it is larger than the sum of its proper divisors (5162987).

19080205 is a wasteful number, since it uses less digits than its factorization.

19080205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224495.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 19080205 is about 4368.0893992683. The cubic root of 19080205 is about 267.2151099792.

Adding to 19080205 its reverse (50208091), we get a palindrome (69288296).

The spelling of 19080205 in words is "nineteen million, eighty thousand, two hundred five".