138532841 has 8 divisors (see below), whose sum is σ = 144879360. Its totient is φ = 132213312.

The previous prime is 138532789. The next prime is 138532843. The reversal of 138532841 is 148235831.

It is a happy number.

138532841 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 138532841 - 2⁶ = 138532777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138532843) 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, 4145 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (18109920).

Almost surely, 2^138532841 is an apocalyptic number.

It is an amenable number.

138532841 is a deficient number, since it is larger than the sum of its proper divisors (6346519).

138532841 is a wasteful number, since it uses less digits than its factorization.

138532841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495.

The product of its digits is 23040, while the sum is 35.

The square root of 138532841 is about 11769.9974936276. The cubic root of 138532841 is about 517.4291762085.

The spelling of 138532841 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, eight hundred forty-one".