1842544327681 has 4 divisors (see below), whose sum is σ = 1842547507200. Its totient is φ = 1842541148164.

The previous prime is 1842544327651. The next prime is 1842544327697. The reversal of 1842544327681 is 1867234452481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1842544327681 - 2⁵ = 1842544327649 is a prime.

It is a super-2 number, since 2×1842544327681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1842544327651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446401 + ... + 1970878.

It is an arithmetic number, because the mean of its divisors is an integer number (460636876800).

Almost surely, 2^{1842544327681} is an apocalyptic number.

It is an amenable number.

1842544327681 is a deficient number, since it is larger than the sum of its proper divisors (3179519).

1842544327681 is an equidigital number, since it uses as much as digits as its factorization.

1842544327681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179518.

The product of its digits is 10321920, while the sum is 55.

The spelling of 1842544327681 in words is "one trillion, eight hundred forty-two billion, five hundred forty-four million, three hundred twenty-seven thousand, six hundred eighty-one".