18299651329 has 2 divisors, whose sum is σ = 18299651330. Its totient is φ = 18299651328.

The previous prime is 18299651239. The next prime is 18299651339. The reversal of 18299651329 is 92315699281.

Together with previous prime (18299651239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14874241600 + 3425409729 = 121960^2 + 58527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18299651329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18299651329.

It is not a weakly prime, because it can be changed into another prime (18299651339) 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, 9149825664 + 9149825665.

It is an arithmetic number, because the mean of its divisors is an integer number (9149825665).

Almost surely, 2^18299651329 is an apocalyptic number.

It is an amenable number.

18299651329 is a deficient number, since it is larger than the sum of its proper divisors (1).

18299651329 is an equidigital number, since it uses as much as digits as its factorization.

18299651329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 55.

The spelling of 18299651329 in words is "eighteen billion, two hundred ninety-nine million, six hundred fifty-one thousand, three hundred twenty-nine".