18038655039318 has 16 divisors (see below), whose sum is σ = 38199504789360. Its totient is φ = 5659185894656.

The previous prime is 18038655039311. The next prime is 18038655039343. The reversal of 18038655039318 is 81393055683081.

It is a super-2 number, since 2×18038655039318² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038655039311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88424779503 + ... + 88424779706.

It is an arithmetic number, because the mean of its divisors is an integer number (2387469049335).

Almost surely, 2^{18038655039318} is an apocalyptic number.

18038655039318 is an abundant number, since it is smaller than the sum of its proper divisors (20160849750042).

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

18038655039318 is a wasteful number, since it uses less digits than its factorization.

18038655039318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176849559231.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 18038655039318 in words is "eighteen trillion, thirty-eight billion, six hundred fifty-five million, thirty-nine thousand, three hundred eighteen".