195172953 has 8 divisors (see below), whose sum is σ = 260819808. Its totient is φ = 129820704.

The previous prime is 195172933. The next prime is 195172961. The reversal of 195172953 is 359271591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195172953 - 2⁶ = 195172889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195172933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72100 + ... + 74757.

It is an arithmetic number, because the mean of its divisors is an integer number (32602476).

Almost surely, 2^195172953 is an apocalyptic number.

It is an amenable number.

195172953 is a deficient number, since it is larger than the sum of its proper divisors (65646855).

195172953 is a wasteful number, since it uses less digits than its factorization.

195172953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147303.

The product of its digits is 85050, while the sum is 42.

The square root of 195172953 is about 13970.4313820297. The cubic root of 195172953 is about 580.0603910561.

The spelling of 195172953 in words is "one hundred ninety-five million, one hundred seventy-two thousand, nine hundred fifty-three".