538138 has 4 divisors (see below), whose sum is σ = 807210. Its totient is φ = 269068.

The previous prime is 538127. The next prime is 538147. The reversal of 538138 is 831835.

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

It can be written as a sum of positive squares in only one way, i.e., 332929 + 205209 = 577^2 + 453^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134533 + ... + 134536.

2⁵³⁸¹³⁸ is an apocalyptic number.

538138 is a deficient number, since it is larger than the sum of its proper divisors (269072).

538138 is a wasteful number, since it uses less digits than its factorization.

538138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269071.

The product of its digits is 2880, while the sum is 28.

The square root of 538138 is about 733.5788982788. The cubic root of 538138 is about 81.3388235716.

It can be divided in two parts, 538 and 138, that added together give a palindrome (676).

The spelling of 538138 in words is "five hundred thirty-eight thousand, one hundred thirty-eight".