18950089 has 2 divisors, whose sum is σ = 18950090. Its totient is φ = 18950088.

The previous prime is 18950069. The next prime is 18950117. The reversal of 18950089 is 98005981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18636489 + 313600 = 4317^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 18950089 - 2¹⁵ = 18917321 is a prime.

It is not a weakly prime, because it can be changed into another prime (18950039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475044 + 9475045.

It is an arithmetic number, because the mean of its divisors is an integer number (9475045).

Almost surely, 2^18950089 is an apocalyptic number.

It is an amenable number.

18950089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950089 is an equidigital number, since it uses as much as digits as its factorization.

18950089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 18950089 is about 4353.1699943834. The cubic root of 18950089 is about 266.6063063037.

The spelling of 18950089 in words is "eighteen million, nine hundred fifty thousand, eighty-nine".