1844194141 has 2 divisors, whose sum is σ = 1844194142. Its totient is φ = 1844194140.

The previous prime is 1844194139. The next prime is 1844194147. The reversal of 1844194141 is 1414914481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1786752900 + 57441241 = 42270^2 + 7579^2 .

It is a cyclic number.

It is not a de Polignac number, because 1844194141 - 2¹ = 1844194139 is a prime.

Together with 1844194139, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1844194141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1844194147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922097070 + 922097071.

It is an arithmetic number, because the mean of its divisors is an integer number (922097071).

It is a self-describing number.

Almost surely, 2^1844194141 is an apocalyptic number.

It is an amenable number.

1844194141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1844194141 is an equidigital number, since it uses as much as digits as its factorization.

1844194141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 37.

The square root of 1844194141 is about 42944.0815596282. The cubic root of 1844194141 is about 1226.3154861302.

The spelling of 1844194141 in words is "one billion, eight hundred forty-four million, one hundred ninety-four thousand, one hundred forty-one".