18005053 has 4 divisors (see below), whose sum is σ = 19641888. Its totient is φ = 16368220.

The previous prime is 18005047. The next prime is 18005101. The reversal of 18005053 is 35050081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35050081 = 11 ⋅3186371.

It is not a de Polignac number, because 18005053 - 2⁹ = 18004541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818401 + ... + 818422.

It is an arithmetic number, because the mean of its divisors is an integer number (4910472).

Almost surely, 2^18005053 is an apocalyptic number.

It is an amenable number.

18005053 is a deficient number, since it is larger than the sum of its proper divisors (1636835).

18005053 is a wasteful number, since it uses less digits than its factorization.

18005053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636834.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 18005053 is about 4243.2361470934. The cubic root of 18005053 is about 262.0986604714.

The spelling of 18005053 in words is "eighteen million, five thousand, fifty-three".