138103168 has 96 divisors (see below), whose sum is σ = 324770040. Its totient is φ = 58318848.

The previous prime is 138103157. The next prime is 138103193. The reversal of 138103168 is 861301831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608271 + ... + 608497.

Almost surely, 2^138103168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138103168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162385020).

138103168 is an abundant number, since it is smaller than the sum of its proper divisors (186666872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138103168 is an equidigital number, since it uses as much as digits as its factorization.

138103168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 138103168 is about 11751.7304257713. The cubic root of 138103168 is about 516.8936699795.

Adding to 138103168 its reverse (861301831), we get a palindrome (999404999).

The spelling of 138103168 in words is "one hundred thirty-eight million, one hundred three thousand, one hundred sixty-eight".