138385583 has 8 divisors (see below), whose sum is σ = 158564640. Its totient is φ = 118308960.

The previous prime is 138385573. The next prime is 138385591. The reversal of 138385583 is 385583831.

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

It is a de Polignac number, because none of the positive numbers 2^k-138385583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138385543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22688 + ... + 28133.

It is an arithmetic number, because the mean of its divisors is an integer number (19820580).

Almost surely, 2^138385583 is an apocalyptic number.

138385583 is a deficient number, since it is larger than the sum of its proper divisors (20179057).

138385583 is an equidigital number, since it uses as much as digits as its factorization.

138385583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51217.

The product of its digits is 345600, while the sum is 44.

The square root of 138385583 is about 11763.7401790417. The cubic root of 138385583 is about 517.2457718037.

The spelling of 138385583 in words is "one hundred thirty-eight million, three hundred eighty-five thousand, five hundred eighty-three".