138785583 has 8 divisors (see below), whose sum is σ = 186685488. Its totient is φ = 91704704.

The previous prime is 138785579. The next prime is 138785623. The reversal of 138785583 is 385587831.

It is a happy number.

138785583 is nontrivially palindromic in base 9.

138785583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138785583 - 2² = 138785579 is a prime.

It is a super-2 number, since 2×138785583² = 38522876097299778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138785513) 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, 204360 + ... + 205037.

It is an arithmetic number, because the mean of its divisors is an integer number (23335686).

Almost surely, 2^138785583 is an apocalyptic number.

138785583 is a deficient number, since it is larger than the sum of its proper divisors (47899905).

138785583 is a wasteful number, since it uses less digits than its factorization.

138785583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409513.

The product of its digits is 806400, while the sum is 48.

The square root of 138785583 is about 11780.7293067959. The cubic root of 138785583 is about 517.7436543118.

The spelling of 138785583 in words is "one hundred thirty-eight million, seven hundred eighty-five thousand, five hundred eighty-three".