138163 has 2 divisors, whose sum is σ = 138164. Its totient is φ = 138162.

The previous prime is 138157. The next prime is 138179. The reversal of 138163 is 361831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138163 - 2¹³ = 129971 is a prime.

It is not a weakly prime, because it can be changed into another prime (138113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69081 + 69082.

It is an arithmetic number, because the mean of its divisors is an integer number (69082).

2¹³⁸¹⁶³ is an apocalyptic number.

138163 is a deficient number, since it is larger than the sum of its proper divisors (1).

138163 is an equidigital number, since it uses as much as digits as its factorization.

138163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 138163 is about 371.7028382996. The cubic root of 138163 is about 51.6968305769.

Subtracting from 138163 its product of digits (432), we obtain a palindrome (137731).

Adding to 138163 its reverse (361831), we get a palindrome (499994).

It can be divided in two parts, 1381 and 63, that added together give a square (1444 = 38²).

The spelling of 138163 in words is "one hundred thirty-eight thousand, one hundred sixty-three".