138496585 has 8 divisors (see below), whose sum is σ = 166287240. Its totient is φ = 110736384.

The previous prime is 138496577. The next prime is 138496591. The reversal of 138496585 is 585694831.

It can be written as a sum of positive squares in 4 ways, for example, as 1817104 + 136679481 = 1348^2 + 11691^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 138496585 - 2³ = 138496577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4011 + ... + 17119.

It is an arithmetic number, because the mean of its divisors is an integer number (20785905).

Almost surely, 2^138496585 is an apocalyptic number.

It is an amenable number.

138496585 is a deficient number, since it is larger than the sum of its proper divisors (27790655).

138496585 is a wasteful number, since it uses less digits than its factorization.

138496585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15227.

The product of its digits is 1036800, while the sum is 49.

The square root of 138496585 is about 11768.4572055984. The cubic root of 138496585 is about 517.3840327636.

It can be divided in two parts, 1384 and 96585, that added together give a square (97969 = 313²).

The spelling of 138496585 in words is "one hundred thirty-eight million, four hundred ninety-six thousand, five hundred eighty-five".