138532365 has 24 divisors (see below), whose sum is σ = 242375328. Its totient is φ = 73190880.

The previous prime is 138532313. The next prime is 138532367. The reversal of 138532365 is 563235831.

It is not a de Polignac number, because 138532365 - 2¹¹ = 138530317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138532367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9571 + ... + 19200.

It is an arithmetic number, because the mean of its divisors is an integer number (10098972).

Almost surely, 2^138532365 is an apocalyptic number.

138532365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138532365 is a deficient number, since it is larger than the sum of its proper divisors (103842963).

138532365 is a wasteful number, since it uses less digits than its factorization.

138532365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28889 (or 28886 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 138532365 is about 11769.9772727053. The cubic root of 138532365 is about 517.4285835775.

The spelling of 138532365 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, three hundred sixty-five".