1804981184873 has 2 divisors, whose sum is σ = 1804981184874. Its totient is φ = 1804981184872.

The previous prime is 1804981184869. The next prime is 1804981184921. The reversal of 1804981184873 is 3784811894081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392286722304 + 412694462569 = 1179952^2 + 642413^2 .

It is a cyclic number.

It is not a de Polignac number, because 1804981184873 - 2² = 1804981184869 is a prime.

It is a super-2 number, since 2×1804981184873² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1804981181873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902490592436 + 902490592437.

It is an arithmetic number, because the mean of its divisors is an integer number (902490592437).

Almost surely, 2^{1804981184873} is an apocalyptic number.

It is an amenable number.

1804981184873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804981184873 is an equidigital number, since it uses as much as digits as its factorization.

1804981184873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12386304, while the sum is 62.

The spelling of 1804981184873 in words is "one trillion, eight hundred four billion, nine hundred eighty-one million, one hundred eighty-four thousand, eight hundred seventy-three".