138925274 has 8 divisors (see below), whose sum is σ = 211323168. Its totient is φ = 68484220.

The previous prime is 138925273. The next prime is 138925289. The reversal of 138925274 is 472529831.

138925274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (138925271) 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, 489032 + ... + 489315.

It is an arithmetic number, because the mean of its divisors is an integer number (26415396).

Almost surely, 2^138925274 is an apocalyptic number.

138925274 is a deficient number, since it is larger than the sum of its proper divisors (72397894).

138925274 is an equidigital number, since it uses as much as digits as its factorization.

138925274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978420.

The product of its digits is 120960, while the sum is 41.

The square root of 138925274 is about 11786.6566082159. The cubic root of 138925274 is about 517.9173031772.

The spelling of 138925274 in words is "one hundred thirty-eight million, nine hundred twenty-five thousand, two hundred seventy-four".