2281738788138 has 32 divisors (see below), whose sum is σ = 4913814352320. Its totient is φ = 703706743040.

The previous prime is 2281738788113. The next prime is 2281738788149. The reversal of 2281738788138 is 8318878371822.

It is a happy number.

It is a Curzon 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, 189570153 + ... + 189582188.

It is an arithmetic number, because the mean of its divisors is an integer number (153556698510).

Almost surely, 2^{2281738788138} is an apocalyptic number.

2281738788138 is an abundant number, since it is smaller than the sum of its proper divisors (2632075564182).

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

2281738788138 is a wasteful number, since it uses less digits than its factorization.

2281738788138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379152422.

The product of its digits is 57802752, while the sum is 66.

The spelling of 2281738788138 in words is "two trillion, two hundred eighty-one billion, seven hundred thirty-eight million, seven hundred eighty-eight thousand, one hundred thirty-eight".