194995271 has 4 divisors (see below), whose sum is σ = 205258200. Its totient is φ = 184732344.

The previous prime is 194995267. The next prime is 194995279. The reversal of 194995271 is 172599491.

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 194995271 - 2² = 194995267 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 (194995279) 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, 5131436 + ... + 5131473.

It is an arithmetic number, because the mean of its divisors is an integer number (51314550).

Almost surely, 2^194995271 is an apocalyptic number.

194995271 is a deficient number, since it is larger than the sum of its proper divisors (10262929).

194995271 is a wasteful number, since it uses less digits than its factorization.

194995271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262928.

The product of its digits is 204120, while the sum is 47.

The square root of 194995271 is about 13964.0707173804. The cubic root of 194995271 is about 579.8843120431.

The spelling of 194995271 in words is "one hundred ninety-four million, nine hundred ninety-five thousand, two hundred seventy-one".