195913878 has 8 divisors (see below), whose sum is σ = 391827768. Its totient is φ = 65304624.

The previous prime is 195913873. The next prime is 195913901. The reversal of 195913878 is 878319591.

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

195913878 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 195913878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195913873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16326151 + ... + 16326162.

It is an arithmetic number, because the mean of its divisors is an integer number (48978471).

Almost surely, 2^195913878 is an apocalyptic number.

195913878 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.

195913878 is a wasteful number, since it uses less digits than its factorization.

195913878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32652318.

The product of its digits is 544320, while the sum is 51.

The square root of 195913878 is about 13996.9238763380. The cubic root of 195913878 is about 580.7934819389.

The spelling of 195913878 in words is "one hundred ninety-five million, nine hundred thirteen thousand, eight hundred seventy-eight".