18053885 has 8 divisors (see below), whose sum is σ = 21704760. Its totient is φ = 14416384.

The previous prime is 18053843. The next prime is 18053909. The reversal of 18053885 is 58835081.

It can be written as a sum of positive squares in 4 ways, for example, as 972196 + 17081689 = 986^2 + 4133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18053885 - 2¹² = 18049789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 6009.

It is an arithmetic number, because the mean of its divisors is an integer number (2713095).

Almost surely, 2^18053885 is an apocalyptic number.

It is an amenable number.

18053885 is a deficient number, since it is larger than the sum of its proper divisors (3650875).

18053885 is an equidigital number, since it uses as much as digits as its factorization.

18053885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 18053885 is about 4248.9863497074. The cubic root of 18053885 is about 262.3353949135.

The spelling of 18053885 in words is "eighteen million, fifty-three thousand, eight hundred eighty-five".