195247138 has 8 divisors (see below), whose sum is σ = 305604288. Its totient is φ = 93379044.

The previous prime is 195247123. The next prime is 195247141. The reversal of 195247138 is 831742591.

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

It is a self number, because there is not a number n which added to its sum of digits gives 195247138.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2122206 + ... + 2122297.

It is an arithmetic number, because the mean of its divisors is an integer number (38200536).

Almost surely, 2^195247138 is an apocalyptic number.

195247138 is a deficient number, since it is larger than the sum of its proper divisors (110357150).

195247138 is a wasteful number, since it uses less digits than its factorization.

195247138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244528.

The product of its digits is 60480, while the sum is 40.

The square root of 195247138 is about 13973.0862016950. The cubic root of 195247138 is about 580.1338751609.

It can be divided in two parts, 19524 and 7138, that added together give a palindrome (26662).

The spelling of 195247138 in words is "one hundred ninety-five million, two hundred forty-seven thousand, one hundred thirty-eight".