195889253 has 4 divisors (see below), whose sum is σ = 223873440. Its totient is φ = 167905068.

The previous prime is 195889237. The next prime is 195889261. The reversal of 195889253 is 352988591.

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: 352988591 = 43 ⋅8209037.

It is a cyclic number.

It is not a de Polignac number, because 195889253 - 2⁴ = 195889237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195883253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13992083 + ... + 13992096.

It is an arithmetic number, because the mean of its divisors is an integer number (55968360).

Almost surely, 2^195889253 is an apocalyptic number.

It is an amenable number.

195889253 is a deficient number, since it is larger than the sum of its proper divisors (27984187).

195889253 is an equidigital number, since it uses as much as digits as its factorization.

195889253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27984186.

The product of its digits is 777600, while the sum is 50.

The square root of 195889253 is about 13996.0441911277. The cubic root of 195889253 is about 580.7691470307.

The spelling of 195889253 in words is "one hundred ninety-five million, eight hundred eighty-nine thousand, two hundred fifty-three".