197716369 has 2 divisors, whose sum is σ = 197716370. Its totient is φ = 197716368.

The previous prime is 197716367. The next prime is 197716399. The reversal of 197716369 is 963617791.

197716369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187553025 + 10163344 = 13695^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 197716369 - 2¹ = 197716367 is a prime.

It is a super-2 number, since 2×197716369² = 78183525141088322, which contains 22 as substring.

Together with 197716367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (197716367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98858184 + 98858185.

It is an arithmetic number, because the mean of its divisors is an integer number (98858185).

Almost surely, 2^197716369 is an apocalyptic number.

It is an amenable number.

197716369 is a deficient number, since it is larger than the sum of its proper divisors (1).

197716369 is an equidigital number, since it uses as much as digits as its factorization.

197716369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 197716369 is about 14061.1652788807. The cubic root of 197716369 is about 582.5692294934.

The spelling of 197716369 in words is "one hundred ninety-seven million, seven hundred sixteen thousand, three hundred sixty-nine".