18713443 has 12 divisors (see below), whose sum is σ = 22141080. Its totient is φ = 15765792.

The previous prime is 18713437. The next prime is 18713449. The reversal of 18713443 is 34431781.

It is an interprime number because it is at equal distance from previous prime (18713437) and next prime (18713449).

It is not a de Polignac number, because 18713443 - 2⁵ = 18713411 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (18713449) 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 11 ways as a sum of consecutive naturals, for example, 346 + ... + 6127.

It is an arithmetic number, because the mean of its divisors is an integer number (1845090).

Almost surely, 2^18713443 is an apocalyptic number.

18713443 is a deficient number, since it is larger than the sum of its proper divisors (3427637).

18713443 is an equidigital number, since it uses as much as digits as its factorization.

18713443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546 (or 6539 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 18713443 is about 4325.9037206115. The cubic root of 18713443 is about 265.4918739230.

The spelling of 18713443 in words is "eighteen million, seven hundred thirteen thousand, four hundred forty-three".