194857 has 6 divisors (see below), whose sum is σ = 211182. Its totient is φ = 179712.

The previous prime is 194839. The next prime is 194861. The reversal of 194857 is 758491.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4761 + 190096 = 69^2 + 436^2 .

It is not a de Polignac number, because 194857 - 2⁷ = 194729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (35197).

2¹⁹⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

194857 is a deficient number, since it is larger than the sum of its proper divisors (16325).

194857 is a wasteful number, since it uses less digits than its factorization.

194857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1166 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 194857 is about 441.4260980051. The cubic root of 194857 is about 57.9747214456.

The spelling of 194857 in words is "one hundred ninety-four thousand, eight hundred fifty-seven".