138804318 has 12 divisors (see below), whose sum is σ = 300742728. Its totient is φ = 46268100.

The previous prime is 138804313. The next prime is 138804319. The reversal of 138804318 is 813408831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138804313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3855658 + ... + 3855693.

It is an arithmetic number, because the mean of its divisors is an integer number (25061894).

Almost surely, 2^138804318 is an apocalyptic number.

138804318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138804318 is an abundant number, since it is smaller than the sum of its proper divisors (161938410).

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

138804318 is a wasteful number, since it uses less digits than its factorization.

138804318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711359 (or 7711356 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 138804318 is about 11781.5244344694. The cubic root of 138804318 is about 517.7669504177.

The spelling of 138804318 in words is "one hundred thirty-eight million, eight hundred four thousand, three hundred eighteen".