138638356230 has 32 divisors (see below), whose sum is σ = 362980424448. Its totient is φ = 33609298400.

The previous prime is 138638356223. The next prime is 138638356261. The reversal of 138638356230 is 32653836831.

138638356230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138638356230.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 210057786 + ... + 210058445.

It is an arithmetic number, because the mean of its divisors is an integer number (11343138264).

Almost surely, 2^138638356230 is an apocalyptic number.

138638356230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138638356230 is an abundant number, since it is smaller than the sum of its proper divisors (224342068218).

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

138638356230 is a wasteful number, since it uses less digits than its factorization.

138638356230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420116252.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 138638356230 in words is "one hundred thirty-eight billion, six hundred thirty-eight million, three hundred fifty-six thousand, two hundred thirty".