19642324201 has 2 divisors, whose sum is σ = 19642324202. Its totient is φ = 19642324200.

The previous prime is 19642324187. The next prime is 19642324213. The reversal of 19642324201 is 10242324691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12039356176 + 7602968025 = 109724^2 + 87195^2 .

It is a cyclic number.

It is not a de Polignac number, because 19642324201 - 2⁹ = 19642323689 is a prime.

It is not a weakly prime, because it can be changed into another prime (19642325201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9821162100 + 9821162101.

It is an arithmetic number, because the mean of its divisors is an integer number (9821162101).

Almost surely, 2^19642324201 is an apocalyptic number.

It is an amenable number.

19642324201 is a deficient number, since it is larger than the sum of its proper divisors (1).

19642324201 is an equidigital number, since it uses as much as digits as its factorization.

19642324201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 19642324201 its reverse (10242324691), we get a palindrome (29884648892).

The spelling of 19642324201 in words is "nineteen billion, six hundred forty-two million, three hundred twenty-four thousand, two hundred one".