138782547 has 12 divisors (see below), whose sum is σ = 200740384. Its totient is φ = 92394000.

The previous prime is 138782537. The next prime is 138782551. The reversal of 138782547 is 745287831.

138782547 is a `hidden beast` number, since 1 + 38 + 78 + 2 + 547 = 666.

It is not a de Polignac number, because 138782547 - 2⁸ = 138782291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138782537) 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 11 ways as a sum of consecutive naturals, for example, 3508 + ... + 17025.

Almost surely, 2^138782547 is an apocalyptic number.

138782547 is a deficient number, since it is larger than the sum of its proper divisors (61957837).

138782547 is a wasteful number, since it uses less digits than its factorization.

138782547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21290 (or 21287 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 138782547 is about 11780.6004515899. The cubic root of 138782547 is about 517.7398789888.

The spelling of 138782547 in words is "one hundred thirty-eight million, seven hundred eighty-two thousand, five hundred forty-seven".