18628003 has 2 divisors, whose sum is σ = 18628004. Its totient is φ = 18628002.

The previous prime is 18627989. The next prime is 18628013. The reversal of 18628003 is 30082681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18628003 is a prime.

It is not a weakly prime, because it can be changed into another prime (18628013) 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 as a sum of consecutive naturals, namely, 9314001 + 9314002.

It is an arithmetic number, because the mean of its divisors is an integer number (9314002).

Almost surely, 2^18628003 is an apocalyptic number.

18628003 is a deficient number, since it is larger than the sum of its proper divisors (1).

18628003 is an equidigital number, since it uses as much as digits as its factorization.

18628003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 18628003 is about 4316.0170296235. The cubic root of 18628003 is about 265.0872051908.

The spelling of 18628003 in words is "eighteen million, six hundred twenty-eight thousand, three".