195397459 has 2 divisors, whose sum is σ = 195397460. Its totient is φ = 195397458.

The previous prime is 195397429. The next prime is 195397519. The reversal of 195397459 is 954793591.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195397459 - 2⁹ = 195396947 is a prime.

It is not a weakly prime, because it can be changed into another prime (195397429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97698729 + 97698730.

It is an arithmetic number, because the mean of its divisors is an integer number (97698730).

Almost surely, 2^195397459 is an apocalyptic number.

195397459 is a deficient number, since it is larger than the sum of its proper divisors (1).

195397459 is an equidigital number, since it uses as much as digits as its factorization.

195397459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1530900, while the sum is 52.

The square root of 195397459 is about 13978.4641144870. The cubic root of 195397459 is about 580.2827188855.

The spelling of 195397459 in words is "one hundred ninety-five million, three hundred ninety-seven thousand, four hundred fifty-nine".