197830769 has 2 divisors, whose sum is σ = 197830770. Its totient is φ = 197830768.

The previous prime is 197830729. The next prime is 197830807. The reversal of 197830769 is 967038791.

197830769 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., 156550144 + 41280625 = 12512^2 + 6425^2 .

It is an emirp because it is prime and its reverse (967038791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197830769 is a prime.

It is a super-2 number, since 2×197830769² = 78274026326262722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197830729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98915384 + 98915385.

It is an arithmetic number, because the mean of its divisors is an integer number (98915385).

Almost surely, 2^197830769 is an apocalyptic number.

It is an amenable number.

197830769 is a deficient number, since it is larger than the sum of its proper divisors (1).

197830769 is an equidigital number, since it uses as much as digits as its factorization.

197830769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 197830769 is about 14065.2326322745. The cubic root of 197830769 is about 582.6815673007.

The spelling of 197830769 in words is "one hundred ninety-seven million, eight hundred thirty thousand, seven hundred sixty-nine".