18053109 has 18 divisors (see below), whose sum is σ = 27078870. Its totient is φ = 11576208.

The previous prime is 18053089. The next prime is 18053117. The reversal of 18053109 is 90135081.

It can be written as a sum of positive squares in only one way, i.e., 15563025 + 2490084 = 3945^2 + 1578^2 .

It is not a de Polignac number, because 18053109 - 2²¹ = 15955957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053149) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 68512 + ... + 68774.

Almost surely, 2^18053109 is an apocalyptic number.

It is an amenable number.

18053109 is a deficient number, since it is larger than the sum of its proper divisors (9025761).

18053109 is an equidigital number, since it uses as much as digits as its factorization.

18053109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 18053109 is about 4248.8950328291. The cubic root of 18053109 is about 262.3316362547.

The spelling of 18053109 in words is "eighteen million, fifty-three thousand, one hundred nine".