138371583 has 8 divisors (see below), whose sum is σ = 210851968. Its totient is φ = 79069464.

The previous prime is 138371561. The next prime is 138371591. The reversal of 138371583 is 385173831.

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

It is not a de Polignac number, because 138371583 - 2⁸ = 138371327 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 (138371503) 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, 3294541 + ... + 3294582.

It is an arithmetic number, because the mean of its divisors is an integer number (26356496).

Almost surely, 2^138371583 is an apocalyptic number.

138371583 is a deficient number, since it is larger than the sum of its proper divisors (72480385).

138371583 is an equidigital number, since it uses as much as digits as its factorization.

138371583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6589133.

The product of its digits is 60480, while the sum is 39.

The square root of 138371583 is about 11763.1451151467. The cubic root of 138371583 is about 517.2283285487.

The spelling of 138371583 in words is "one hundred thirty-eight million, three hundred seventy-one thousand, five hundred eighty-three".