30205105193 has 2 divisors, whose sum is σ = 30205105194. Its totient is φ = 30205105192.

The previous prime is 30205105103. The next prime is 30205105261. The reversal of 30205105193 is 39150150203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18325849129 + 11879256064 = 135373^2 + 108992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30205105193 is a prime.

It is not a weakly prime, because it can be changed into another prime (30205105103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15102552596 + 15102552597.

It is an arithmetic number, because the mean of its divisors is an integer number (15102552597).

Almost surely, 2^30205105193 is an apocalyptic number.

It is an amenable number.

30205105193 is a deficient number, since it is larger than the sum of its proper divisors (1).

30205105193 is an equidigital number, since it uses as much as digits as its factorization.

30205105193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 29.

Adding to 30205105193 its reverse (39150150203), we get a palindrome (69355255396).

The spelling of 30205105193 in words is "thirty billion, two hundred five million, one hundred five thousand, one hundred ninety-three".