138637582158 has 16 divisors (see below), whose sum is σ = 277313533056. Its totient is φ = 46206132600.

The previous prime is 138637582151. The next prime is 138637582159. The reversal of 138637582158 is 851285736831.

138637582158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138637582098 and 138637582107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138637582151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551618 + ... + 1638533.

It is an arithmetic number, because the mean of its divisors is an integer number (17332095816).

Almost surely, 2^138637582158 is an apocalyptic number.

138637582158 is an abundant number, since it is smaller than the sum of its proper divisors (138675950898).

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

138637582158 is a wasteful number, since it uses less digits than its factorization.

138637582158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197399.

The product of its digits is 9676800, while the sum is 57.

The spelling of 138637582158 in words is "one hundred thirty-eight billion, six hundred thirty-seven million, five hundred eighty-two thousand, one hundred fifty-eight".