138368383 has 4 divisors (see below), whose sum is σ = 138417928. Its totient is φ = 138318840.

The previous prime is 138368369. The next prime is 138368413. The reversal of 138368383 is 383863831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383863831 = 13 ⋅29527987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138368383 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 (138368323) 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, 20316 + ... + 26257.

It is an arithmetic number, because the mean of its divisors is an integer number (34604482).

Almost surely, 2^138368383 is an apocalyptic number.

138368383 is a deficient number, since it is larger than the sum of its proper divisors (49545).

138368383 is an equidigital number, since it uses as much as digits as its factorization.

138368383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49544.

The product of its digits is 248832, while the sum is 43.

The square root of 138368383 is about 11763.0090963154. The cubic root of 138368383 is about 517.2243413538.

The spelling of 138368383 in words is "one hundred thirty-eight million, three hundred sixty-eight thousand, three hundred eighty-three".