195612738 has 8 divisors (see below), whose sum is σ = 391225488. Its totient is φ = 65204244.

The previous prime is 195612721. The next prime is 195612749. The reversal of 195612738 is 837216591.

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

195612738 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 195612738.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 16301056 + ... + 16301067.

It is an arithmetic number, because the mean of its divisors is an integer number (48903186).

Almost surely, 2^195612738 is an apocalyptic number.

195612738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195612738 is a wasteful number, since it uses less digits than its factorization.

195612738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32602128.

The product of its digits is 90720, while the sum is 42.

The square root of 195612738 is about 13986.1623757198. The cubic root of 195612738 is about 580.4957493488.

The spelling of 195612738 in words is "one hundred ninety-five million, six hundred twelve thousand, seven hundred thirty-eight".