138529585 has 8 divisors (see below), whose sum is σ = 166579776. Its totient is φ = 110594160.

The previous prime is 138529571. The next prime is 138529619. The reversal of 138529585 is 585925831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138529585 - 2⁵ = 138529553 is a prime.

It is a super-3 number, since 3×138529585³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26011 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (20822472).

Almost surely, 2^138529585 is an apocalyptic number.

It is an amenable number.

138529585 is a deficient number, since it is larger than the sum of its proper divisors (28050191).

138529585 is an equidigital number, since it uses as much as digits as its factorization.

138529585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57383.

The product of its digits is 432000, while the sum is 46.

The square root of 138529585 is about 11769.8591750284. The cubic root of 138529585 is about 517.4251223862.

The spelling of 138529585 in words is "one hundred thirty-eight million, five hundred twenty-nine thousand, five hundred eighty-five".