138804315 has 16 divisors (see below), whose sum is σ = 239170848. Its totient is φ = 68334336.

The previous prime is 138804313. The next prime is 138804319. The reversal of 138804315 is 513408831.

It is not a de Polignac number, because 138804315 - 2¹ = 138804313 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 355714 + ... + 356103.

It is an arithmetic number, because the mean of its divisors is an integer number (14948178).

Almost surely, 2^138804315 is an apocalyptic number.

138804315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138804315 is a deficient number, since it is larger than the sum of its proper divisors (100366533).

138804315 is a wasteful number, since it uses less digits than its factorization.

138804315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711838.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 138804315 is about 11781.5243071514. The cubic root of 138804315 is about 517.7669466875.

The spelling of 138804315 in words is "one hundred thirty-eight million, eight hundred four thousand, three hundred fifteen".