18089896289 has 2 divisors, whose sum is σ = 18089896290. Its totient is φ = 18089896288.

The previous prime is 18089896211. The next prime is 18089896387. The reversal of 18089896289 is 98269898081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15223364689 + 2866531600 = 123383^2 + 53540^2 .

It is a cyclic number.

It is not a de Polignac number, because 18089896289 - 2³² = 13794928993 is a prime.

It is not a weakly prime, because it can be changed into another prime (18089895289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9044948144 + 9044948145.

It is an arithmetic number, because the mean of its divisors is an integer number (9044948145).

Almost surely, 2^18089896289 is an apocalyptic number.

It is an amenable number.

18089896289 is a deficient number, since it is larger than the sum of its proper divisors (1).

18089896289 is an equidigital number, since it uses as much as digits as its factorization.

18089896289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35831808, while the sum is 68.

The spelling of 18089896289 in words is "eighteen billion, eighty-nine million, eight hundred ninety-six thousand, two hundred eighty-nine".