18053345 has 4 divisors (see below), whose sum is σ = 21664020. Its totient is φ = 14442672.

The previous prime is 18053333. The next prime is 18053353. The reversal of 18053345 is 54335081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1957201 + 16096144 = 1399^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 18053345 - 2⁶ = 18053281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805330 + ... + 1805339.

It is an arithmetic number, because the mean of its divisors is an integer number (5416005).

Almost surely, 2^18053345 is an apocalyptic number.

It is an amenable number.

18053345 is a deficient number, since it is larger than the sum of its proper divisors (3610675).

18053345 is an equidigital number, since it uses as much as digits as its factorization.

18053345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610674.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 18053345 is about 4248.9228046647. The cubic root of 18053345 is about 262.3327793633.

The spelling of 18053345 in words is "eighteen million, fifty-three thousand, three hundred forty-five".