18416118436 has 9 divisors (see below), whose sum is σ = 32228682241. Its totient is φ = 9207923512.

The previous prime is 18416118361. The next prime is 18416118473. The reversal of 18416118436 is 63481161481.

The square root of 18416118436 is 135706.

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., 14479308900 + 3936809536 = 120330^2 + 62744^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18416118392 and 18416118401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 237486 + ... + 305338.

Almost surely, 2^18416118436 is an apocalyptic number.

18416118436 is the 135706-th square number.

It is an amenable number.

18416118436 is a deficient number, since it is larger than the sum of its proper divisors (13812563805).

18416118436 is an frugal number, since it uses more digits than its factorization.

18416118436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135710 (or 67855 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The spelling of 18416118436 in words is "eighteen billion, four hundred sixteen million, one hundred eighteen thousand, four hundred thirty-six".