8518423 has 4 divisors (see below), whose sum is σ = 8550360. Its totient is φ = 8486488.

The previous prime is 8518417. The next prime is 8518427. The reversal of 8518423 is 3248158.

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 8518423 - 2²¹ = 6421271 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 (8518427) 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, 15565 + ... + 16102.

It is an arithmetic number, because the mean of its divisors is an integer number (2137590).

Almost surely, 2^8518423 is an apocalyptic number.

8518423 is a deficient number, since it is larger than the sum of its proper divisors (31937).

8518423 is a wasteful number, since it uses less digits than its factorization.

8518423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31936.

The product of its digits is 7680, while the sum is 31.

The square root of 8518423 is about 2918.6337557152. The cubic root of 8518423 is about 204.2300924883.

The spelling of 8518423 in words is "eight million, five hundred eighteen thousand, four hundred twenty-three".