195253091 has 4 divisors (see below), whose sum is σ = 213003384. Its totient is φ = 177502800.

The previous prime is 195253081. The next prime is 195253103. The reversal of 195253091 is 190352591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195253091 - 2¹⁰ = 195252067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195253001) 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, 8875130 + ... + 8875151.

It is an arithmetic number, because the mean of its divisors is an integer number (53250846).

Almost surely, 2^195253091 is an apocalyptic number.

195253091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

195253091 is a deficient number, since it is larger than the sum of its proper divisors (17750293).

195253091 is a wasteful number, since it uses less digits than its factorization.

195253091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17750292.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 195253091 is about 13973.2992167204. The cubic root of 195253091 is about 580.1397711105.

The spelling of 195253091 in words is "one hundred ninety-five million, two hundred fifty-three thousand, ninety-one".