195319397 has 8 divisors (see below), whose sum is σ = 240393216. Its totient is φ = 154538352.

The previous prime is 195319391. The next prime is 195319429. The reversal of 195319397 is 793913591.

195319397 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 cyclic number.

It is not a de Polignac number, because 195319397 - 2⁸ = 195319141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195319391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073093 + ... + 1073274.

It is an arithmetic number, because the mean of its divisors is an integer number (30049152).

Almost surely, 2^195319397 is an apocalyptic number.

It is an amenable number.

195319397 is a deficient number, since it is larger than the sum of its proper divisors (45073819).

195319397 is a wasteful number, since it uses less digits than its factorization.

195319397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146387.

The product of its digits is 229635, while the sum is 47.

The square root of 195319397 is about 13975.6716117688. The cubic root of 195319397 is about 580.2054335694.

The spelling of 195319397 in words is "one hundred ninety-five million, three hundred nineteen thousand, three hundred ninety-seven".