18528899 has 2 divisors, whose sum is σ = 18528900. Its totient is φ = 18528898.

The previous prime is 18528871. The next prime is 18528907. The reversal of 18528899 is 99882581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18528899 - 2¹⁶ = 18463363 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18522899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9264449 + 9264450.

It is an arithmetic number, because the mean of its divisors is an integer number (9264450).

Almost surely, 2^18528899 is an apocalyptic number.

18528899 is a deficient number, since it is larger than the sum of its proper divisors (1).

18528899 is an equidigital number, since it uses as much as digits as its factorization.

18528899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The square root of 18528899 is about 4304.5207631048. The cubic root of 18528899 is about 264.6162667226.

The spelling of 18528899 in words is "eighteen million, five hundred twenty-eight thousand, eight hundred ninety-nine".