138233165 has 48 divisors (see below), whose sum is σ = 200439360. Its totient is φ = 91203840.

The previous prime is 138233159. The next prime is 138233167. The reversal of 138233165 is 561332831.

It is not a de Polignac number, because 138233165 - 2⁸ = 138232909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138233167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1055150 + ... + 1055280.

It is an arithmetic number, because the mean of its divisors is an integer number (4175820).

Almost surely, 2^138233165 is an apocalyptic number.

It is an amenable number.

138233165 is a deficient number, since it is larger than the sum of its proper divisors (62206195).

138233165 is a wasteful number, since it uses less digits than its factorization.

138233165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 275 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 138233165 is about 11757.2600974887. The cubic root of 138233165 is about 517.0558037305.

Adding to 138233165 its reverse (561332831), we get a palindrome (699565996).

The spelling of 138233165 in words is "one hundred thirty-eight million, two hundred thirty-three thousand, one hundred sixty-five".