18452479 has 4 divisors (see below), whose sum is σ = 18471376. Its totient is φ = 18433584.

The previous prime is 18452453. The next prime is 18452491. The reversal of 18452479 is 97425481.

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

It is a cyclic number.

It is not a de Polignac number, because 18452479 - 2²¹ = 16355327 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 (18452579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7899 + ... + 9964.

It is an arithmetic number, because the mean of its divisors is an integer number (4617844).

Almost surely, 2^18452479 is an apocalyptic number.

18452479 is a deficient number, since it is larger than the sum of its proper divisors (18897).

18452479 is a wasteful number, since it uses less digits than its factorization.

18452479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18896.

The product of its digits is 80640, while the sum is 40.

The square root of 18452479 is about 4295.6348774075. The cubic root of 18452479 is about 264.2519738067.

The spelling of 18452479 in words is "eighteen million, four hundred fifty-two thousand, four hundred seventy-nine".