138555382 has 32 divisors (see below), whose sum is σ = 241512768. Its totient is φ = 58392576.

The previous prime is 138555377. The next prime is 138555401. The reversal of 138555382 is 283555831.

It is a happy number.

138555382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348808 + ... + 349204.

It is an arithmetic number, because the mean of its divisors is an integer number (7547274).

Almost surely, 2^138555382 is an apocalyptic number.

138555382 is a deficient number, since it is larger than the sum of its proper divisors (102957386).

138555382 is a wasteful number, since it uses less digits than its factorization.

138555382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its digits is 144000, while the sum is 40.

The square root of 138555382 is about 11770.9550164802. The cubic root of 138555382 is about 517.4572387205.

The spelling of 138555382 in words is "one hundred thirty-eight million, five hundred fifty-five thousand, three hundred eighty-two".