138606045 has 32 divisors (see below), whose sum is σ = 237427200. Its totient is φ = 68837184.

The previous prime is 138606001. The next prime is 138606047. The reversal of 138606045 is 540606831.

It is not a de Polignac number, because 138606045 - 2¹³ = 138597853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138605997 and 138606015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138606047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12694 + ... + 20936.

It is an arithmetic number, because the mean of its divisors is an integer number (7419600).

Almost surely, 2^138606045 is an apocalyptic number.

138606045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138606045 is a deficient number, since it is larger than the sum of its proper divisors (98821155).

138606045 is a wasteful number, since it uses less digits than its factorization.

138606045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8329.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 138606045 is about 11773.1068541825. The cubic root of 138606045 is about 517.5203007276.

The spelling of 138606045 in words is "one hundred thirty-eight million, six hundred six thousand, forty-five".