195158197 has 32 divisors (see below), whose sum is σ = 230791680. Its totient is φ = 163511040.

The previous prime is 195158189. The next prime is 195158251. The reversal of 195158197 is 791851591.

195158197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 195158197 - 2³ = 195158189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195158297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615483 + ... + 615799.

It is an arithmetic number, because the mean of its divisors is an integer number (7212240).

Almost surely, 2^195158197 is an apocalyptic number.

It is an amenable number.

195158197 is a deficient number, since it is larger than the sum of its proper divisors (35633483).

195158197 is a wasteful number, since it uses less digits than its factorization.

195158197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 113400, while the sum is 46.

The square root of 195158197 is about 13969.9032566443. The cubic root of 195158197 is about 580.0457722497.

The spelling of 195158197 in words is "one hundred ninety-five million, one hundred fifty-eight thousand, one hundred ninety-seven".