138747586 has 16 divisors (see below), whose sum is σ = 212129280. Its totient is φ = 68043280.

The previous prime is 138747563. The next prime is 138747593. The reversal of 138747586 is 685747831.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 64671 + ... + 66781.

It is an arithmetic number, because the mean of its divisors is an integer number (13258080).

Almost surely, 2^138747586 is an apocalyptic number.

138747586 is a deficient number, since it is larger than the sum of its proper divisors (73381694).

138747586 is a wasteful number, since it uses less digits than its factorization.

138747586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729.

The product of its digits is 1128960, while the sum is 49.

The square root of 138747586 is about 11779.1165203508. The cubic root of 138747586 is about 517.6964003612.

The spelling of 138747586 in words is "one hundred thirty-eight million, seven hundred forty-seven thousand, five hundred eighty-six".