138755383 has 4 divisors (see below), whose sum is σ = 149428888. Its totient is φ = 128081880.

The previous prime is 138755359. The next prime is 138755399. The reversal of 138755383 is 383557831.

138755383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138755383 - 2⁹ = 138754871 is a prime.

It is a super-3 number, since 3×138755383³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138755083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336733 + ... + 5336758.

It is an arithmetic number, because the mean of its divisors is an integer number (37357222).

Almost surely, 2^138755383 is an apocalyptic number.

138755383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138755383 is a deficient number, since it is larger than the sum of its proper divisors (10673505).

138755383 is a wasteful number, since it uses less digits than its factorization.

138755383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673504.

The product of its digits is 302400, while the sum is 43.

The square root of 138755383 is about 11779.4474827982. The cubic root of 138755383 is about 517.7060975947.

The spelling of 138755383 in words is "one hundred thirty-eight million, seven hundred fifty-five thousand, three hundred eighty-three".