138675485 has 12 divisors (see below), whose sum is σ = 180197172. Its totient is φ = 102405888.

The previous prime is 138675479. The next prime is 138675517. The reversal of 138675485 is 584576831.

It can be written as a sum of positive squares in 6 ways, for example, as 21104836 + 117570649 = 4594^2 + 10843^2 .

It is not a de Polignac number, because 138675485 - 2⁴ = 138675469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81212 + ... + 82901.

It is an arithmetic number, because the mean of its divisors is an integer number (15016431).

Almost surely, 2^138675485 is an apocalyptic number.

It is an amenable number.

138675485 is a deficient number, since it is larger than the sum of its proper divisors (41521687).

138675485 is a wasteful number, since it uses less digits than its factorization.

138675485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164144 (or 164131 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 138675485 is about 11776.0555790129. The cubic root of 138675485 is about 517.6067101625.

The spelling of 138675485 in words is "one hundred thirty-eight million, six hundred seventy-five thousand, four hundred eighty-five".