18733049 has 2 divisors, whose sum is σ = 18733050. Its totient is φ = 18733048.

The previous prime is 18733019. The next prime is 18733061. The reversal of 18733049 is 94033781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18490000 + 243049 = 4300^2 + 493^2 .

It is an emirp because it is prime and its reverse (94033781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18733049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18733019) 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 as a sum of consecutive naturals, namely, 9366524 + 9366525.

It is an arithmetic number, because the mean of its divisors is an integer number (9366525).

Almost surely, 2^18733049 is an apocalyptic number.

It is an amenable number.

18733049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18733049 is an equidigital number, since it uses as much as digits as its factorization.

18733049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 18733049 is about 4328.1692434562. The cubic root of 18733049 is about 265.5845598227.

The spelling of 18733049 in words is "eighteen million, seven hundred thirty-three thousand, forty-nine".