195138584 has 8 divisors (see below), whose sum is σ = 365884860. Its totient is φ = 97569288.

The previous prime is 195138577. The next prime is 195138589. The reversal of 195138584 is 485831591.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195138589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12196154 + ... + 12196169.

Almost surely, 2^195138584 is an apocalyptic number.

It is an amenable number.

195138584 is a deficient number, since it is larger than the sum of its proper divisors (170746276).

195138584 is a wasteful number, since it uses less digits than its factorization.

195138584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24392329 (or 24392325 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 195138584 is about 13969.2012656415. The cubic root of 195138584 is about 580.0263404605.

The spelling of 195138584 in words is "one hundred ninety-five million, one hundred thirty-eight thousand, five hundred eighty-four".