197719141 has 2 divisors, whose sum is σ = 197719142. Its totient is φ = 197719140.

The previous prime is 197719139. The next prime is 197719169. The reversal of 197719141 is 141917791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197290116 + 429025 = 14046^2 + 655^2 .

It is an emirp because it is prime and its reverse (141917791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197719141 - 2¹ = 197719139 is a prime.

Together with 197719139, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 197719094 and 197719103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197719121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98859570 + 98859571.

It is an arithmetic number, because the mean of its divisors is an integer number (98859571).

Almost surely, 2^197719141 is an apocalyptic number.

It is an amenable number.

197719141 is a deficient number, since it is larger than the sum of its proper divisors (1).

197719141 is an equidigital number, since it uses as much as digits as its factorization.

197719141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 40.

The square root of 197719141 is about 14061.2638478908. The cubic root of 197719141 is about 582.5719520371.

The spelling of 197719141 in words is "one hundred ninety-seven million, seven hundred nineteen thousand, one hundred forty-one".