18522453 has 4 divisors (see below), whose sum is σ = 24696608. Its totient is φ = 12348300.

The previous prime is 18522443. The next prime is 18522461. The reversal of 18522453 is 35422581.

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.

It is not a de Polignac number, because 18522453 - 2⁴ = 18522437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18522453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18522433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087073 + ... + 3087078.

It is an arithmetic number, because the mean of its divisors is an integer number (6174152).

Almost surely, 2^18522453 is an apocalyptic number.

It is an amenable number.

18522453 is a deficient number, since it is larger than the sum of its proper divisors (6174155).

18522453 is an equidigital number, since it uses as much as digits as its factorization.

18522453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174154.

The product of its digits is 9600, while the sum is 30.

The square root of 18522453 is about 4303.7719502780. The cubic root of 18522453 is about 264.5855774680.

The spelling of 18522453 in words is "eighteen million, five hundred twenty-two thousand, four hundred fifty-three".