18395832529 has 2 divisors, whose sum is σ = 18395832530. Its totient is φ = 18395832528.

The previous prime is 18395832523. The next prime is 18395832569. The reversal of 18395832529 is 92523859381.

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., 16938501904 + 1457330625 = 130148^2 + 38175^2 .

It is a cyclic number.

It is not a de Polignac number, because 18395832529 - 2²¹ = 18393735377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18395832529.

It is not a weakly prime, because it can be changed into another prime (18395832523) 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, 9197916264 + 9197916265.

It is an arithmetic number, because the mean of its divisors is an integer number (9197916265).

Almost surely, 2^18395832529 is an apocalyptic number.

It is an amenable number.

18395832529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18395832529 is an equidigital number, since it uses as much as digits as its factorization.

18395832529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 55.

The spelling of 18395832529 in words is "eighteen billion, three hundred ninety-five million, eight hundred thirty-two thousand, five hundred twenty-nine".