195132971 has 4 divisors (see below), whose sum is σ = 212872344. Its totient is φ = 177393600.

The previous prime is 195132937. The next prime is 195132991. The reversal of 195132971 is 179231591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195132971 - 2¹⁴ = 195116587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195132911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8869670 + ... + 8869691.

It is an arithmetic number, because the mean of its divisors is an integer number (53218086).

Almost surely, 2^195132971 is an apocalyptic number.

195132971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

195132971 is a deficient number, since it is larger than the sum of its proper divisors (17739373).

195132971 is a wasteful number, since it uses less digits than its factorization.

195132971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17739372.

The product of its digits is 17010, while the sum is 38.

The square root of 195132971 is about 13969.0003579354. Note that the first 3 decimals coincide. The cubic root of 195132971 is about 580.0207790812.

The spelling of 195132971 in words is "one hundred ninety-five million, one hundred thirty-two thousand, nine hundred seventy-one".