1836636230489 has 2 divisors, whose sum is σ = 1836636230490. Its totient is φ = 1836636230488.

The previous prime is 1836636230479. The next prime is 1836636230557. The reversal of 1836636230489 is 9840326366381.

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., 1678385025625 + 158251204864 = 1295525^2 + 397808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1836636230489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1836636230479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918318115244 + 918318115245.

It is an arithmetic number, because the mean of its divisors is an integer number (918318115245).

Almost surely, 2^{1836636230489} is an apocalyptic number.

It is an amenable number.

1836636230489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836636230489 is an equidigital number, since it uses as much as digits as its factorization.

1836636230489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 1836636230489 in words is "one trillion, eight hundred thirty-six billion, six hundred thirty-six million, two hundred thirty thousand, four hundred eighty-nine".