138173118 has 8 divisors (see below), whose sum is σ = 276346248. Its totient is φ = 46057704.

The previous prime is 138173117. The next prime is 138173137. The reversal of 138173118 is 811371831.

It is a sphenic number, since it is the product of 3 distinct primes.

138173118 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138173117) 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, 11514421 + ... + 11514432.

It is an arithmetic number, because the mean of its divisors is an integer number (34543281).

Almost surely, 2^138173118 is an apocalyptic number.

138173118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138173118 is a wasteful number, since it uses less digits than its factorization.

138173118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23028858.

The product of its digits is 4032, while the sum is 33.

The square root of 138173118 is about 11754.7062064520. The cubic root of 138173118 is about 516.9809250607.

The spelling of 138173118 in words is "one hundred thirty-eight million, one hundred seventy-three thousand, one hundred eighteen".