138318784310 has 32 divisors (see below), whose sum is σ = 285087719232. Its totient is φ = 47332546560.

The previous prime is 138318784271. The next prime is 138318784319. The reversal of 138318784310 is 13487813831.

It is a super-2 number, since 2×138318784310² (a number of 23 digits) contains 22 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 (138318784319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1859867 + ... + 1932806.

It is an arithmetic number, because the mean of its divisors is an integer number (8908991226).

Almost surely, 2^138318784310 is an apocalyptic number.

138318784310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138318784310 is an abundant number, since it is smaller than the sum of its proper divisors (146768934922).

138318784310 is a wasteful number, since it uses less digits than its factorization.

138318784310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793208.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 138318784310 in words is "one hundred thirty-eight billion, three hundred eighteen million, seven hundred eighty-four thousand, three hundred ten".