138582518 has 8 divisors (see below), whose sum is σ = 207969600. Its totient is φ = 69259320.

The previous prime is 138582497. The next prime is 138582539. The reversal of 138582518 is 815285831.

It is an interprime number because it is at equal distance from previous prime (138582497) and next prime (138582539).

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

It is a super-2 number, since 2×138582518² = 38410228590440648, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 10118 + ... + 19481.

It is an arithmetic number, because the mean of its divisors is an integer number (25996200).

Almost surely, 2^138582518 is an apocalyptic number.

138582518 is a deficient number, since it is larger than the sum of its proper divisors (69387082).

138582518 is a wasteful number, since it uses less digits than its factorization.

138582518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31942.

The product of its digits is 76800, while the sum is 41.

The square root of 138582518 is about 11772.1076277785. The cubic root of 138582518 is about 517.4910177597.

The spelling of 138582518 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, five hundred eighteen".