18486443 has 2 divisors, whose sum is σ = 18486444. Its totient is φ = 18486442.

The previous prime is 18486397. The next prime is 18486451. The reversal of 18486443 is 34468481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18486443 - 2⁶ = 18486379 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18486397 and 18486406.

It is not a weakly prime, because it can be changed into another prime (18486473) 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 as a sum of consecutive naturals, namely, 9243221 + 9243222.

It is an arithmetic number, because the mean of its divisors is an integer number (9243222).

Almost surely, 2^18486443 is an apocalyptic number.

18486443 is a deficient number, since it is larger than the sum of its proper divisors (1).

18486443 is an equidigital number, since it uses as much as digits as its factorization.

18486443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 38.

The square root of 18486443 is about 4299.5863754552. The cubic root of 18486443 is about 264.4140035825.

The spelling of 18486443 in words is "eighteen million, four hundred eighty-six thousand, four hundred forty-three".