191748353 has 2 divisors, whose sum is σ = 191748354. Its totient is φ = 191748352.

The previous prime is 191748317. The next prime is 191748379. The reversal of 191748353 is 353847191.

191748353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161366209 + 30382144 = 12703^2 + 5512^2 .

It is an emirp because it is prime and its reverse (353847191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191748353 - 2¹⁰ = 191747329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 191748353.

It is not a weakly prime, because it can be changed into another prime (191748313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95874176 + 95874177.

It is an arithmetic number, because the mean of its divisors is an integer number (95874177).

Almost surely, 2^191748353 is an apocalyptic number.

It is an amenable number.

191748353 is a deficient number, since it is larger than the sum of its proper divisors (1).

191748353 is an equidigital number, since it uses as much as digits as its factorization.

191748353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 191748353 is about 13847.3229542753. The cubic root of 191748353 is about 576.6476778063.

The spelling of 191748353 in words is "one hundred ninety-one million, seven hundred forty-eight thousand, three hundred fifty-three".