19201361 has 2 divisors, whose sum is σ = 19201362. Its totient is φ = 19201360.

The previous prime is 19201339. The next prime is 19201379. The reversal of 19201361 is 16310291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18653761 + 547600 = 4319^2 + 740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19201361 is a prime.

It is not a weakly prime, because it can be changed into another prime (19201561) 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, 9600680 + 9600681.

It is an arithmetic number, because the mean of its divisors is an integer number (9600681).

Almost surely, 2^19201361 is an apocalyptic number.

It is an amenable number.

19201361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19201361 is an equidigital number, since it uses as much as digits as its factorization.

19201361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 19201361 is about 4381.9357594561. The cubic root of 19201361 is about 267.7795069545.

The spelling of 19201361 in words is "nineteen million, two hundred one thousand, three hundred sixty-one".