138530606 has 16 divisors (see below), whose sum is σ = 213840000. Its totient is φ = 67269048.

The previous prime is 138530551. The next prime is 138530617. The reversal of 138530606 is 606035831.

It is a congruent number.

It is an unprimeable number.

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, 10895 + ... + 19893.

It is an arithmetic number, because the mean of its divisors is an integer number (13365000).

Almost surely, 2^138530606 is an apocalyptic number.

138530606 is a deficient number, since it is larger than the sum of its proper divisors (75309394).

138530606 is a wasteful number, since it uses less digits than its factorization.

138530606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 138530606 is about 11769.9025484496. The cubic root of 138530606 is about 517.4263935701.

The spelling of 138530606 in words is "one hundred thirty-eight million, five hundred thirty thousand, six hundred six".