138350558 has 8 divisors (see below), whose sum is σ = 207664128. Its totient is φ = 69129184.

The previous prime is 138350521. The next prime is 138350581. The reversal of 138350558 is 855053831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×138350558³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19166 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (25958016).

Almost surely, 2^138350558 is an apocalyptic number.

138350558 is a deficient number, since it is larger than the sum of its proper divisors (69313570).

138350558 is a wasteful number, since it uses less digits than its factorization.

138350558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46098.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 138350558 is about 11762.2514001359. The cubic root of 138350558 is about 517.2021303072.

The spelling of 138350558 in words is "one hundred thirty-eight million, three hundred fifty thousand, five hundred fifty-eight".