194851 has 4 divisors (see below), whose sum is σ = 201600. Its totient is φ = 188104.

The previous prime is 194839. The next prime is 194861. The reversal of 194851 is 158491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158491 = 17 ⋅9323.

It is a cyclic number.

It is not a de Polignac number, because 194851 - 2⁵ = 194819 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194861) 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, 3331 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2¹⁹⁴⁸⁵¹ is an apocalyptic number.

194851 is a deficient number, since it is larger than the sum of its proper divisors (6749).

194851 is an equidigital number, since it uses as much as digits as its factorization.

194851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748.

The product of its digits is 1440, while the sum is 28.

The square root of 194851 is about 441.4193017982. The cubic root of 194851 is about 57.9741263906.

The spelling of 194851 in words is "one hundred ninety-four thousand, eight hundred fifty-one".