195213918 has 8 divisors (see below), whose sum is σ = 390427848. Its totient is φ = 65071304.

The previous prime is 195213901. The next prime is 195213929. The reversal of 195213918 is 819312591.

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

195213918 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16267821 + ... + 16267832.

It is an arithmetic number, because the mean of its divisors is an integer number (48803481).

Almost surely, 2^195213918 is an apocalyptic number.

195213918 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.

195213918 is a wasteful number, since it uses less digits than its factorization.

195213918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32535658.

The product of its digits is 19440, while the sum is 39.

The square root of 195213918 is about 13971.8974373562. The cubic root of 195213918 is about 580.1009713231.

The spelling of 195213918 in words is "one hundred ninety-five million, two hundred thirteen thousand, nine hundred eighteen".