19722341 has 2 divisors, whose sum is σ = 19722342. Its totient is φ = 19722340.

The previous prime is 19722317. The next prime is 19722359. The reversal of 19722341 is 14322791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 450241 = 4390^2 + 671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19722341 is a prime.

It is a Sophie Germain prime.

It is a pancake number, because a pancake can be divided into 19722341 parts by 6280 straight cuts.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19722301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9861170 + 9861171.

It is an arithmetic number, because the mean of its divisors is an integer number (9861171).

Almost surely, 2^19722341 is an apocalyptic number.

It is an amenable number.

19722341 is a deficient number, since it is larger than the sum of its proper divisors (1).

19722341 is an equidigital number, since it uses as much as digits as its factorization.

19722341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 19722341 is about 4440.9842377563. The cubic root of 19722341 is about 270.1797659734.

The spelling of 19722341 in words is "nineteen million, seven hundred twenty-two thousand, three hundred forty-one".