18300367489 has 2 divisors, whose sum is σ = 18300367490. Its totient is φ = 18300367488.

The previous prime is 18300367453. The next prime is 18300367529. The reversal of 18300367489 is 98476300381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16012371600 + 2287995889 = 126540^2 + 47833^2 .

It is a cyclic number.

It is not a de Polignac number, because 18300367489 - 2²⁹ = 17763496577 is a prime.

It is not a weakly prime, because it can be changed into another prime (18300367409) 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, 9150183744 + 9150183745.

It is an arithmetic number, because the mean of its divisors is an integer number (9150183745).

Almost surely, 2^18300367489 is an apocalyptic number.

It is an amenable number.

18300367489 is a deficient number, since it is larger than the sum of its proper divisors (1).

18300367489 is an equidigital number, since it uses as much as digits as its factorization.

18300367489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 18300367489 in words is "eighteen billion, three hundred million, three hundred sixty-seven thousand, four hundred eighty-nine".