18813414244 has 9 divisors (see below), whose sum is σ = 32923955001. Its totient is φ = 9406569960.

The previous prime is 18813414239. The next prime is 18813414289. The reversal of 18813414244 is 44241431881.

It is a happy number.

The square root of 18813414244 is 137162.

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., 4269054244 + 14544360000 = 65338^2 + 120600^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18813414197 and 18813414206.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 240034 + ... + 308614.

Almost surely, 2^18813414244 is an apocalyptic number.

18813414244 is the 137162-nd square number.

It is an amenable number.

18813414244 is a deficient number, since it is larger than the sum of its proper divisors (14110540757).

18813414244 is an frugal number, since it uses more digits than its factorization.

18813414244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137166 (or 68583 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The spelling of 18813414244 in words is "eighteen billion, eight hundred thirteen million, four hundred fourteen thousand, two hundred forty-four".