138353044 has 12 divisors (see below), whose sum is σ = 242246368. Its totient is φ = 69139800.

The previous prime is 138353029. The next prime is 138353051. The reversal of 138353044 is 440353831.

It is a junction number, because it is equal to n+sod(n) for n = 138352997 and 138353015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 16639.

Almost surely, 2^138353044 is an apocalyptic number.

It is an amenable number.

138353044 is a deficient number, since it is larger than the sum of its proper divisors (103893324).

138353044 is a wasteful number, since it uses less digits than its factorization.

138353044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18366 (or 18364 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 138353044 is about 11762.3570767087. The cubic root of 138353044 is about 517.2052281306.

The spelling of 138353044 in words is "one hundred thirty-eight million, three hundred fifty-three thousand, forty-four".