338191 has 4 divisors (see below), whose sum is σ = 386512. Its totient is φ = 289872.

The previous prime is 338183. The next prime is 338197. The reversal of 338191 is 191833.

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 338191 - 2³ = 338183 is a prime.

It is a super-2 number, since 2×338191² = 228746304962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338197) 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, 24150 + ... + 24163.

It is an arithmetic number, because the mean of its divisors is an integer number (96628).

2³³⁸¹⁹¹ is an apocalyptic number.

338191 is a deficient number, since it is larger than the sum of its proper divisors (48321).

338191 is an equidigital number, since it uses as much as digits as its factorization.

338191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48320.

The product of its digits is 648, while the sum is 25.

The square root of 338191 is about 581.5419159442. The cubic root of 338191 is about 69.6713162295.

It can be divided in two parts, 338 and 191, that added together give a square (529 = 23²).

The spelling of 338191 in words is "three hundred thirty-eight thousand, one hundred ninety-one".