19182020201 has 2 divisors, whose sum is σ = 19182020202. Its totient is φ = 19182020200.

The previous prime is 19182020173. The next prime is 19182020251. The reversal of 19182020201 is 10202028191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14462467600 + 4719552601 = 120260^2 + 68699^2 .

It is a cyclic number.

It is not a de Polignac number, because 19182020201 - 2¹⁴ = 19182003817 is a prime.

It is not a weakly prime, because it can be changed into another prime (19182020251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9591010100 + 9591010101.

It is an arithmetic number, because the mean of its divisors is an integer number (9591010101).

Almost surely, 2^19182020201 is an apocalyptic number.

It is an amenable number.

19182020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

19182020201 is an equidigital number, since it uses as much as digits as its factorization.

19182020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 19182020201 its reverse (10202028191), we get a palindrome (29384048392).

The spelling of 19182020201 in words is "nineteen billion, one hundred eighty-two million, twenty thousand, two hundred one".