138385468 has 24 divisors (see below), whose sum is σ = 262327968. Its totient is φ = 63496896.

The previous prime is 138385463. The next prime is 138385483. The reversal of 138385468 is 864583831.

138385468 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 not an unprimeable number, because it can be changed into a prime (138385463) 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, 1305 + ... + 16687.

It is an arithmetic number, because the mean of its divisors is an integer number (10930332).

Almost surely, 2^138385468 is an apocalyptic number.

It is an amenable number.

138385468 is a deficient number, since it is larger than the sum of its proper divisors (123942500).

138385468 is a wasteful number, since it uses less digits than its factorization.

138385468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15573 (or 15571 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 138385468 is about 11763.7352911395. The cubic root of 138385468 is about 517.2456285246.

It can be divided in two parts, 13838 and 5468, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 138385468 in words is "one hundred thirty-eight million, three hundred eighty-five thousand, four hundred sixty-eight".