18413384730724 has 81 divisors (see below), whose sum is σ = 33833551187961. Its totient is φ = 8768225315520.

The previous prime is 18413384730703. The next prime is 18413384730731. The reversal of 18413384730724 is 42703748331481.

The square root of 18413384730724 is 4291082.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 17777270016100 + 636114714624 = 4216310^2 + 797568^2 .

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 26 ways as a sum of consecutive naturals, for example, 17825154112 + ... + 17825155144.

Almost surely, 2^{18413384730724} is an apocalyptic number.

18413384730724 is the 4291082-nd square number.

It is an amenable number.

18413384730724 is a deficient number, since it is larger than the sum of its proper divisors (15420166457237).

18413384730724 is an frugal number, since it uses more digits than its factorization.

18413384730724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 18413384730724 in words is "eighteen trillion, four hundred thirteen billion, three hundred eighty-four million, seven hundred thirty thousand, seven hundred twenty-four".