195397918 has 8 divisors (see below), whose sum is σ = 293187960. Its totient is φ = 97668600.

The previous prime is 195397907. The next prime is 195397931. The reversal of 195397918 is 819793591.

It is a happy number.

195397918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 6033 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (36648495).

Almost surely, 2^195397918 is an apocalyptic number.

195397918 is a deficient number, since it is larger than the sum of its proper divisors (97790042).

195397918 is a wasteful number, since it uses less digits than its factorization.

195397918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30362.

The product of its digits is 612360, while the sum is 52.

The square root of 195397918 is about 13978.4805325901. The cubic root of 195397918 is about 580.2831732578.

The spelling of 195397918 in words is "one hundred ninety-five million, three hundred ninety-seven thousand, nine hundred eighteen".