194213 has 8 divisors (see below), whose sum is σ = 207480. Its totient is φ = 181440.

The previous prime is 194203. The next prime is 194239. The reversal of 194213 is 312491.

It can be written as a sum of positive squares in 4 ways, for example, as 16129 + 178084 = 127^2 + 422^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194213 - 2⁴ = 194197 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 (194203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (25935).

2¹⁹⁴²¹³ is an apocalyptic number.

It is an amenable number.

194213 is a deficient number, since it is larger than the sum of its proper divisors (13267).

194213 is a wasteful number, since it uses less digits than its factorization.

194213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 216, while the sum is 20.

The square root of 194213 is about 440.6960403725. The cubic root of 194213 is about 57.9107823729.

The spelling of 194213 in words is "one hundred ninety-four thousand, two hundred thirteen".