1844455354873 has 2 divisors, whose sum is σ = 1844455354874. Its totient is φ = 1844455354872.

The previous prime is 1844455354871. The next prime is 1844455354927. The reversal of 1844455354873 is 3784535544481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115501405929 + 728953948944 = 1056173^2 + 853788^2 .

It is an emirp because it is prime and its reverse (3784535544481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1844455354873 - 2¹ = 1844455354871 is a prime.

It is a super-2 number, since 2×1844455354873² (a number of 25 digits) contains 22 as substring.

Together with 1844455354871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1844455354871) 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, 922227677436 + 922227677437.

It is an arithmetic number, because the mean of its divisors is an integer number (922227677437).

Almost surely, 2^{1844455354873} is an apocalyptic number.

It is an amenable number.

1844455354873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1844455354873 is an equidigital number, since it uses as much as digits as its factorization.

1844455354873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024000, while the sum is 61.

The spelling of 1844455354873 in words is "one trillion, eight hundred forty-four billion, four hundred fifty-five million, three hundred fifty-four thousand, eight hundred seventy-three".