19774241 has 2 divisors, whose sum is σ = 19774242. Its totient is φ = 19774240.

The previous prime is 19774229. The next prime is 19774283. The reversal of 19774241 is 14247791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 633616 = 4375^2 + 796^2 .

It is an emirp because it is prime and its reverse (14247791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19774241 - 2¹⁰ = 19773217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19774211) 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, 9887120 + 9887121.

It is an arithmetic number, because the mean of its divisors is an integer number (9887121).

Almost surely, 2^19774241 is an apocalyptic number.

It is an amenable number.

19774241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19774241 is an equidigital number, since it uses as much as digits as its factorization.

19774241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 19774241 is about 4446.8236978769. The cubic root of 19774241 is about 270.4165540864.

The spelling of 19774241 in words is "nineteen million, seven hundred seventy-four thousand, two hundred forty-one".