138271585 has 16 divisors (see below), whose sum is σ = 169362432. Its totient is φ = 108345600.

The previous prime is 138271579. The next prime is 138271597. The reversal of 138271585 is 585172831.

It is not a de Polignac number, because 138271585 - 2⁷ = 138271457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62905 + ... + 65065.

It is an arithmetic number, because the mean of its divisors is an integer number (10585152).

Almost surely, 2^138271585 is an apocalyptic number.

It is an amenable number.

138271585 is a deficient number, since it is larger than the sum of its proper divisors (31090847).

138271585 is a wasteful number, since it uses less digits than its factorization.

138271585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424.

The product of its digits is 67200, while the sum is 40.

The square root of 138271585 is about 11758.8938680473. The cubic root of 138271585 is about 517.1037021342.

The spelling of 138271585 in words is "one hundred thirty-eight million, two hundred seventy-one thousand, five hundred eighty-five".