138874326 has 36 divisors (see below), whose sum is σ = 296094132. Its totient is φ = 43414464.

The previous prime is 138874321. The next prime is 138874349. The reversal of 138874326 is 623478831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138874321) 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 17 ways as a sum of consecutive naturals, for example, 490581 + ... + 490863.

It is an arithmetic number, because the mean of its divisors is an integer number (8224837).

Almost surely, 2^138874326 is an apocalyptic number.

138874326 is an abundant number, since it is smaller than the sum of its proper divisors (157219806).

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

138874326 is an equidigital number, since it uses as much as digits as its factorization.

138874326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 305 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 138874326 is about 11784.4951525299. The cubic root of 138874326 is about 517.8539835803.

The spelling of 138874326 in words is "one hundred thirty-eight million, eight hundred seventy-four thousand, three hundred twenty-six".