197389319 has 2 divisors, whose sum is σ = 197389320. Its totient is φ = 197389318.

The previous prime is 197389259. The next prime is 197389333. The reversal of 197389319 is 913983791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197389319 - 2⁸ = 197389063 is a prime.

It is a super-2 number, since 2×197389319² = 77925086510567522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197389219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98694659 + 98694660.

It is an arithmetic number, because the mean of its divisors is an integer number (98694660).

Almost surely, 2^197389319 is an apocalyptic number.

197389319 is a deficient number, since it is larger than the sum of its proper divisors (1).

197389319 is an equidigital number, since it uses as much as digits as its factorization.

197389319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 197389319 is about 14049.5309174364. The cubic root of 197389319 is about 582.2478357414.

The spelling of 197389319 in words is "one hundred ninety-seven million, three hundred eighty-nine thousand, three hundred nineteen".