18044280241 has 9 divisors (see below), whose sum is σ = 19540963809. Its totient is φ = 16654646736.

The previous prime is 18044280239. The next prime is 18044280251. The reversal of 18044280241 is 14208244081.

The square root of 18044280241 is 134329.

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

It can be written as a sum of positive squares in 4 ways, for example, as 365918641 + 17678361600 = 19129^2 + 132960^2 .

It is not a de Polignac number, because 18044280241 - 2¹ = 18044280239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18044280197 and 18044280206.

It is not an unprimeable number, because it can be changed into a prime (18044280251) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1741111 + ... + 1751443.

It is an arithmetic number, because the mean of its divisors is an integer number (2171218201).

Almost surely, 2^18044280241 is an apocalyptic number.

18044280241 is the 134329-th square number.

18044280241 is the 67165-th centered octagonal number.

It is an amenable number.

18044280241 is a deficient number, since it is larger than the sum of its proper divisors (1496683568).

18044280241 is an frugal number, since it uses more digits than its factorization.

18044280241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20692 (or 10346 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

Multiplying 18044280241 by its product of nonzero digits (16384), we get a square (295637487468544 = 17194112²).

The spelling of 18044280241 in words is "eighteen billion, forty-four million, two hundred eighty thousand, two hundred forty-one".