195438653 has 4 divisors (see below), whose sum is σ = 197912640. Its totient is φ = 192964668.

The previous prime is 195438641. The next prime is 195438667. The reversal of 195438653 is 356834591.

195438653 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.

It is a cyclic number.

It is not a de Polignac number, because 195438653 - 2¹² = 195434557 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 (195438673) 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, 1236875 + ... + 1237032.

It is an arithmetic number, because the mean of its divisors is an integer number (49478160).

Almost surely, 2^195438653 is an apocalyptic number.

It is an amenable number.

195438653 is a deficient number, since it is larger than the sum of its proper divisors (2473987).

195438653 is an equidigital number, since it uses as much as digits as its factorization.

195438653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473986.

The product of its digits is 388800, while the sum is 44.

The square root of 195438653 is about 13979.9375177431. The cubic root of 195438653 is about 580.3234947257.

The spelling of 195438653 in words is "one hundred ninety-five million, four hundred thirty-eight thousand, six hundred fifty-three".