19836241 has 2 divisors, whose sum is σ = 19836242. Its totient is φ = 19836240.

The previous prime is 19836149. The next prime is 19836269. The reversal of 19836241 is 14263891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 1380625 = 4296^2 + 1175^2 .

It is an emirp because it is prime and its reverse (14263891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19836241 - 2¹¹ = 19834193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19836197 and 19836206.

It is not a weakly prime, because it can be changed into another prime (19836541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9918120 + 9918121.

It is an arithmetic number, because the mean of its divisors is an integer number (9918121).

Almost surely, 2^19836241 is an apocalyptic number.

It is an amenable number.

19836241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19836241 is an equidigital number, since it uses as much as digits as its factorization.

19836241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 19836241 is about 4453.7895100689. The cubic root of 19836241 is about 270.6988798713.

The spelling of 19836241 in words is "nineteen million, eight hundred thirty-six thousand, two hundred forty-one".