18123053 has 16 divisors (see below), whose sum is σ = 20077680. Its totient is φ = 16353792.

The previous prime is 18123047. The next prime is 18123073. The reversal of 18123053 is 35032181.

It can be written as a sum of positive squares in 8 ways, for example, as 16540489 + 1582564 = 4067^2 + 1258^2 .

It is not a de Polignac number, because 18123053 - 2⁶ = 18122989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160325 + ... + 160437.

It is an arithmetic number, because the mean of its divisors is an integer number (1254855).

Almost surely, 2^18123053 is an apocalyptic number.

18123053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18123053 is a deficient number, since it is larger than the sum of its proper divisors (1954627).

18123053 is an equidigital number, since it uses as much as digits as its factorization.

18123053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 18123053 is about 4257.1179217870. The cubic root of 18123053 is about 262.6699875540.

The spelling of 18123053 in words is "eighteen million, one hundred twenty-three thousand, fifty-three".