18528143 has 2 divisors, whose sum is σ = 18528144. Its totient is φ = 18528142.

The previous prime is 18528137. The next prime is 18528163. The reversal of 18528143 is 34182581.

It is a weak prime.

It is an emirp because it is prime and its reverse (34182581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18528143 - 2¹² = 18524047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18528163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9264071 + 9264072.

It is an arithmetic number, because the mean of its divisors is an integer number (9264072).

Almost surely, 2^18528143 is an apocalyptic number.

18528143 is a deficient number, since it is larger than the sum of its proper divisors (1).

18528143 is an equidigital number, since it uses as much as digits as its factorization.

18528143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 18528143 is about 4304.4329475553. The cubic root of 18528143 is about 264.6126677928.

The spelling of 18528143 in words is "eighteen million, five hundred twenty-eight thousand, one hundred forty-three".