195871523 has 2 divisors, whose sum is σ = 195871524. Its totient is φ = 195871522.

The previous prime is 195871471. The next prime is 195871537. The reversal of 195871523 is 325178591.

195871523 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 is a cyclic number.

It is not a de Polignac number, because 195871523 - 2⁸ = 195871267 is a prime.

It is not a weakly prime, because it can be changed into another prime (195871553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97935761 + 97935762.

It is an arithmetic number, because the mean of its divisors is an integer number (97935762).

Almost surely, 2^195871523 is an apocalyptic number.

195871523 is a deficient number, since it is larger than the sum of its proper divisors (1).

195871523 is an equidigital number, since it uses as much as digits as its factorization.

195871523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The square root of 195871523 is about 13995.4107835390. The cubic root of 195871523 is about 580.7516246339.

The spelling of 195871523 in words is "one hundred ninety-five million, eight hundred seventy-one thousand, five hundred twenty-three".