138530165 has 8 divisors (see below), whose sum is σ = 171598848. Its totient is φ = 107249040.

The previous prime is 138530149. The next prime is 138530167. The reversal of 138530165 is 561035831.

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

It is not a de Polignac number, because 138530165 - 2⁴ = 138530149 is a prime.

It is a super-2 number, since 2×138530165² = 38381213229854450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138530167) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 446717 + ... + 447026.

It is an arithmetic number, because the mean of its divisors is an integer number (21449856).

Almost surely, 2^138530165 is an apocalyptic number.

It is an amenable number.

138530165 is a deficient number, since it is larger than the sum of its proper divisors (33068683).

138530165 is an equidigital number, since it uses as much as digits as its factorization.

138530165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893779.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 138530165 is about 11769.8838142099. The cubic root of 138530165 is about 517.4258445090.

Adding to 138530165 its reverse (561035831), we get a palindrome (699565996).

The spelling of 138530165 in words is "one hundred thirty-eight million, five hundred thirty thousand, one hundred sixty-five".