195638073 has 8 divisors (see below), whose sum is σ = 261843648. Its totient is φ = 129928944.

The previous prime is 195638059. The next prime is 195638081. The reversal of 195638073 is 370836591.

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

It is not a de Polignac number, because 195638073 - 2⁸ = 195637817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195638173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123190 + ... + 124767.

It is an arithmetic number, because the mean of its divisors is an integer number (32730456).

Almost surely, 2^195638073 is an apocalyptic number.

It is an amenable number.

195638073 is a deficient number, since it is larger than the sum of its proper divisors (66205575).

195638073 is a wasteful number, since it uses less digits than its factorization.

195638073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248223.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 195638073 is about 13987.0680630359. The cubic root of 195638073 is about 580.5208094499.

The spelling of 195638073 in words is "one hundred ninety-five million, six hundred thirty-eight thousand, seventy-three".