1836853870249 has 2 divisors, whose sum is σ = 1836853870250. Its totient is φ = 1836853870248.

The previous prime is 1836853870231. The next prime is 1836853870277. The reversal of 1836853870249 is 9420783586381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089242894224 + 747610976025 = 1043668^2 + 864645^2 .

It is an emirp because it is prime and its reverse (9420783586381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1836853870249 - 2⁹ = 1836853869737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1836853870219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918426935124 + 918426935125.

It is an arithmetic number, because the mean of its divisors is an integer number (918426935125).

It is a 1-persistent number, because it is pandigital, but 2⋅1836853870249 = 3673707740498 is not.

Almost surely, 2^{1836853870249} is an apocalyptic number.

It is an amenable number.

1836853870249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836853870249 is an equidigital number, since it uses as much as digits as its factorization.

1836853870249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 1836853870249 in words is "one trillion, eight hundred thirty-six billion, eight hundred fifty-three million, eight hundred seventy thousand, two hundred forty-nine".