195774493 has 4 divisors (see below), whose sum is σ = 195805440. Its totient is φ = 195743548.

The previous prime is 195774473. The next prime is 195774497. The reversal of 195774493 is 394477591.

195774493 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: 394477591 = 1733 ⋅227627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195774493 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195774497) 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, 2173 + ... + 19906.

It is an arithmetic number, because the mean of its divisors is an integer number (48951360).

Almost surely, 2^195774493 is an apocalyptic number.

It is an amenable number.

195774493 is a deficient number, since it is larger than the sum of its proper divisors (30947).

195774493 is an equidigital number, since it uses as much as digits as its factorization.

195774493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30946.

The product of its digits is 952560, while the sum is 49.

The square root of 195774493 is about 13991.9438606650. The cubic root of 195774493 is about 580.6557120399.

The spelling of 195774493 in words is "one hundred ninety-five million, seven hundred seventy-four thousand, four hundred ninety-three".