1018844161 has 2 divisors, whose sum is σ = 1018844162. Its totient is φ = 1018844160.

The previous prime is 1018844159. The next prime is 1018844191. The reversal of 1018844161 is 1614488101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008443536 + 10400625 = 31756^2 + 3225^2 .

It is an emirp because it is prime and its reverse (1614488101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1018844161 - 2¹ = 1018844159 is a prime.

Together with 1018844159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1018844131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509422080 + 509422081.

It is an arithmetic number, because the mean of its divisors is an integer number (509422081).

Almost surely, 2^1018844161 is an apocalyptic number.

It is an amenable number.

1018844161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018844161 is an equidigital number, since it uses as much as digits as its factorization.

1018844161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 1018844161 is about 31919.3383546715. The cubic root of 1018844161 is about 1006.2423391210.

It can be divided in two parts, 101884 and 4161, that multiplied together give a palindrome (423939324).

The spelling of 1018844161 in words is "one billion, eighteen million, eight hundred forty-four thousand, one hundred sixty-one".