538189 has 4 divisors (see below), whose sum is σ = 540124. Its totient is φ = 536256.

The previous prime is 538163. The next prime is 538199. The reversal of 538189 is 981835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 412164 = 355^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 538189 - 2⁵ = 538157 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538159) 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, 462 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (135031).

2⁵³⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

538189 is a deficient number, since it is larger than the sum of its proper divisors (1935).

538189 is a wasteful number, since it uses less digits than its factorization.

538189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934.

The product of its digits is 8640, while the sum is 34.

The square root of 538189 is about 733.6136585424. The cubic root of 538189 is about 81.3413930172.

It can be divided in two parts, 538 and 189, that added together give a palindrome (727).

The spelling of 538189 in words is "five hundred thirty-eight thousand, one hundred eighty-nine".