195172653 has 16 divisors (see below), whose sum is σ = 280937216. Its totient is φ = 119810880.

The previous prime is 195172651. The next prime is 195172661. The reversal of 195172653 is 356271591.

It is not a de Polignac number, because 195172653 - 2¹ = 195172651 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195172651) 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 15 ways as a sum of consecutive naturals, for example, 10476 + ... + 22362.

It is an arithmetic number, because the mean of its divisors is an integer number (17558576).

Almost surely, 2^195172653 is an apocalyptic number.

195172653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

195172653 is a deficient number, since it is larger than the sum of its proper divisors (85764563).

195172653 is a wasteful number, since it uses less digits than its factorization.

195172653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12324.

The product of its digits is 56700, while the sum is 39.

The square root of 195172653 is about 13970.4206450629. The cubic root of 195172653 is about 580.0600938527.

The spelling of 195172653 in words is "one hundred ninety-five million, one hundred seventy-two thousand, six hundred fifty-three".