138365547 has 8 divisors (see below), whose sum is σ = 184541760. Its totient is φ = 92216520.

The previous prime is 138365531. The next prime is 138365551. The reversal of 138365547 is 745563831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138365547 - 2⁴ = 138365531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138365499 and 138365508.

It is not an unprimeable number, because it can be changed into a prime (138365347) 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, 16204 + ... + 23222.

It is an arithmetic number, because the mean of its divisors is an integer number (23067720).

Almost surely, 2^138365547 is an apocalyptic number.

138365547 is a deficient number, since it is larger than the sum of its proper divisors (46176213).

138365547 is an equidigital number, since it uses as much as digits as its factorization.

138365547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593.

The product of its digits is 302400, while the sum is 42.

The square root of 138365547 is about 11762.8885483116. Note that the first 3 decimals coincide. The cubic root of 138365547 is about 517.2208076510.

The spelling of 138365547 in words is "one hundred thirty-eight million, three hundred sixty-five thousand, five hundred forty-seven".