138503583 has 6 divisors (see below), whose sum is σ = 200060744. Its totient is φ = 92335716.

The previous prime is 138503581. The next prime is 138503587. The reversal of 138503583 is 385305831.

It is not a de Polignac number, because 138503583 - 2¹ = 138503581 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 (138503581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7694635 + ... + 7694652.

Almost surely, 2^138503583 is an apocalyptic number.

138503583 is a deficient number, since it is larger than the sum of its proper divisors (61557161).

138503583 is a wasteful number, since it uses less digits than its factorization.

138503583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389293 (or 15389290 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 138503583 is about 11768.7545220384. The cubic root of 138503583 is about 517.3927467991.

The spelling of 138503583 in words is "one hundred thirty-eight million, five hundred three thousand, five hundred eighty-three".