195912523 has 2 divisors, whose sum is σ = 195912524. Its totient is φ = 195912522.

The previous prime is 195912511. The next prime is 195912527. The reversal of 195912523 is 325219591.

It is a strong prime.

It is an emirp because it is prime and its reverse (325219591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195912523 - 2⁵ = 195912491 is a prime.

It is not a weakly prime, because it can be changed into another prime (195912527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97956261 + 97956262.

It is an arithmetic number, because the mean of its divisors is an integer number (97956262).

Almost surely, 2^195912523 is an apocalyptic number.

195912523 is a deficient number, since it is larger than the sum of its proper divisors (1).

195912523 is an equidigital number, since it uses as much as digits as its factorization.

195912523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 37.

The square root of 195912523 is about 13996.8754727618. The cubic root of 195912523 is about 580.7921429544.

The spelling of 195912523 in words is "one hundred ninety-five million, nine hundred twelve thousand, five hundred twenty-three".