195433897 has 4 divisors (see below), whose sum is σ = 196360336. Its totient is φ = 194507460.

The previous prime is 195433891. The next prime is 195433907. The reversal of 195433897 is 798334591.

195433897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798334591 = 29 ⋅27528779.

It is a cyclic number.

It is not a de Polignac number, because 195433897 - 2⁷ = 195433769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195433897.

It is not an unprimeable number, because it can be changed into a prime (195433891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462903 + ... + 463324.

It is an arithmetic number, because the mean of its divisors is an integer number (49090084).

Almost surely, 2^195433897 is an apocalyptic number.

195433897 is the 7473-rd centered heptagonal number.

It is an amenable number.

195433897 is a deficient number, since it is larger than the sum of its proper divisors (926439).

195433897 is an equidigital number, since it uses as much as digits as its factorization.

195433897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926438.

The product of its digits is 816480, while the sum is 49.

The square root of 195433897 is about 13979.7674158049. The cubic root of 195433897 is about 580.3187872964.

The spelling of 195433897 in words is "one hundred ninety-five million, four hundred thirty-three thousand, eight hundred ninety-seven".