138332547 has 6 divisors (see below), whose sum is σ = 199813692. Its totient is φ = 92221692.

The previous prime is 138332533. The next prime is 138332549. The reversal of 138332547 is 745233831.

138332547 is a `hidden beast` number, since 1 + 3 + 83 + 32 + 547 = 666.

It is not a de Polignac number, because 138332547 - 2¹⁹ = 137808259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138332549) 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 5 ways as a sum of consecutive naturals, for example, 7685133 + ... + 7685150.

It is an arithmetic number, because the mean of its divisors is an integer number (33302282).

Almost surely, 2^138332547 is an apocalyptic number.

138332547 is a deficient number, since it is larger than the sum of its proper divisors (61481145).

138332547 is a wasteful number, since it uses less digits than its factorization.

138332547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15370289 (or 15370286 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 138332547 is about 11761.4857479827. The cubic root of 138332547 is about 517.1796855554.

It can be divided in two parts, 1383 and 32547, that added together give a triangular number (33930 = T₂₆₀).

The spelling of 138332547 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, five hundred forty-seven".