1608444841 has 2 divisors, whose sum is σ = 1608444842. Its totient is φ = 1608444840.

The previous prime is 1608444839. The next prime is 1608444847. The reversal of 1608444841 is 1484448061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1523731225 + 84713616 = 39035^2 + 9204^2 .

It is an emirp because it is prime and its reverse (1484448061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1608444841 - 2¹ = 1608444839 is a prime.

Together with 1608444839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1608444794 and 1608444803.

It is not a weakly prime, because it can be changed into another prime (1608444847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804222420 + 804222421.

It is an arithmetic number, because the mean of its divisors is an integer number (804222421).

Almost surely, 2^1608444841 is an apocalyptic number.

It is an amenable number.

1608444841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608444841 is an equidigital number, since it uses as much as digits as its factorization.

1608444841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 1608444841 is about 40105.4215911016. The cubic root of 1608444841 is about 1171.6612243375.

The spelling of 1608444841 in words is "one billion, six hundred eight million, four hundred forty-four thousand, eight hundred forty-one".