138270558 has 16 divisors (see below), whose sum is σ = 276656400. Its totient is φ = 46070976.

The previous prime is 138270551. The next prime is 138270563. The reversal of 138270558 is 855072831.

It is a super-3 number, since 3×138270558³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138270551) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25416 + ... + 30372.

It is an arithmetic number, because the mean of its divisors is an integer number (17291025).

Almost surely, 2^138270558 is an apocalyptic number.

138270558 is an abundant number, since it is smaller than the sum of its proper divisors (138385842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138270558 is a wasteful number, since it uses less digits than its factorization.

138270558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 138270558 is about 11758.8501988927. The cubic root of 138270558 is about 517.1024218836.

The spelling of 138270558 in words is "one hundred thirty-eight million, two hundred seventy thousand, five hundred fifty-eight".