195120879 has 8 divisors (see below), whose sum is σ = 260299440. Its totient is φ = 130011456.

The previous prime is 195120857. The next prime is 195120889. The reversal of 195120879 is 978021591.

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

It is not a de Polignac number, because 195120879 - 2¹¹ = 195118831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195120879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195120839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10294 + ... + 22275.

It is an arithmetic number, because the mean of its divisors is an integer number (32537430).

Almost surely, 2^195120879 is an apocalyptic number.

195120879 is a deficient number, since it is larger than the sum of its proper divisors (65178561).

195120879 is a wasteful number, since it uses less digits than its factorization.

195120879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34569.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 195120879 is about 13968.5675357210. The cubic root of 195120879 is about 580.0087979244.

The spelling of 195120879 in words is "one hundred ninety-five million, one hundred twenty thousand, eight hundred seventy-nine".