1827573781373 has 2 divisors, whose sum is σ = 1827573781374. Its totient is φ = 1827573781372.

The previous prime is 1827573781337. The next prime is 1827573781379. The reversal of 1827573781373 is 3731873757281.

Together with previous prime (1827573781337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1623593285209 + 203980496164 = 1274203^2 + 451642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1827573781373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1827573781379) 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, 913786890686 + 913786890687.

It is an arithmetic number, because the mean of its divisors is an integer number (913786890687).

Almost surely, 2^{1827573781373} is an apocalyptic number.

It is an amenable number.

1827573781373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1827573781373 is an equidigital number, since it uses as much as digits as its factorization.

1827573781373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41489280, while the sum is 62.

The spelling of 1827573781373 in words is "one trillion, eight hundred twenty-seven billion, five hundred seventy-three million, seven hundred eighty-one thousand, three hundred seventy-three".