138204374 has 32 divisors (see below), whose sum is σ = 259324416. Its totient is φ = 53665920.

The previous prime is 138204371. The next prime is 138204383. The reversal of 138204374 is 473402831.

138204374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138204374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138204371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50567 + ... + 53229.

It is an arithmetic number, because the mean of its divisors is an integer number (8103888).

Almost surely, 2^138204374 is an apocalyptic number.

138204374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138204374 is a deficient number, since it is larger than the sum of its proper divisors (121120042).

138204374 is a wasteful number, since it uses less digits than its factorization.

138204374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 138204374 is about 11756.0356413206. The cubic root of 138204374 is about 517.0199040309.

The spelling of 138204374 in words is "one hundred thirty-eight million, two hundred four thousand, three hundred seventy-four".