18333500089 has 2 divisors, whose sum is σ = 18333500090. Its totient is φ = 18333500088.

The previous prime is 18333500039. The next prime is 18333500093. The reversal of 18333500089 is 98000533381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16884403600 + 1449096489 = 129940^2 + 38067^2 .

It is a cyclic number.

It is not a de Polignac number, because 18333500089 - 2⁹ = 18333499577 is a prime.

It is a super-2 number, since 2×18333500089² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18333500039) 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, 9166750044 + 9166750045.

It is an arithmetic number, because the mean of its divisors is an integer number (9166750045).

Almost surely, 2^18333500089 is an apocalyptic number.

It is an amenable number.

18333500089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18333500089 is an equidigital number, since it uses as much as digits as its factorization.

18333500089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 18333500089 in words is "eighteen billion, three hundred thirty-three million, five hundred thousand, eighty-nine".