195129523 has 2 divisors, whose sum is σ = 195129524. Its totient is φ = 195129522.

The previous prime is 195129509. The next prime is 195129541. The reversal of 195129523 is 325921591.

195129523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195129523 - 2¹³ = 195121331 is a prime.

It is not a weakly prime, because it can be changed into another prime (195129223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97564761 + 97564762.

It is an arithmetic number, because the mean of its divisors is an integer number (97564762).

Almost surely, 2^195129523 is an apocalyptic number.

195129523 is a deficient number, since it is larger than the sum of its proper divisors (1).

195129523 is an equidigital number, since it uses as much as digits as its factorization.

195129523 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 195129523 is about 13968.8769412577. The cubic root of 195129523 is about 580.0173627383.

The spelling of 195129523 in words is "one hundred ninety-five million, one hundred twenty-nine thousand, five hundred twenty-three".