194138 has 16 divisors (see below), whose sum is σ = 340800. Its totient is φ = 82908.

The previous prime is 194119. The next prime is 194141. The reversal of 194138 is 831491.

It is a Curzon number.

It is a nialpdrome in base 12.

It is an unprimeable number.

194138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 545 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (21300).

2¹⁹⁴¹³⁸ is an apocalyptic number.

194138 is a deficient number, since it is larger than the sum of its proper divisors (146662).

194138 is an equidigital number, since it uses as much as digits as its factorization.

194138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 292 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 194138 is about 440.6109394920. The cubic root of 194138 is about 57.9033268681.

The spelling of 194138 in words is "one hundred ninety-four thousand, one hundred thirty-eight".