3081644389 has 2 divisors, whose sum is σ = 3081644390. Its totient is φ = 3081644388.

The previous prime is 3081644353. The next prime is 3081644437. The reversal of 3081644389 is 9834461803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2383099489 + 698544900 = 48817^2 + 26430^2 .

It is an emirp because it is prime and its reverse (9834461803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3081644389 - 2¹⁷ = 3081513317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3081644339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1540822194 + 1540822195.

It is an arithmetic number, because the mean of its divisors is an integer number (1540822195).

Almost surely, 2^3081644389 is an apocalyptic number.

It is an amenable number.

3081644389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3081644389 is an equidigital number, since it uses as much as digits as its factorization.

3081644389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 3081644389 is about 55512.5606417142. The cubic root of 3081644389 is about 1455.2161539654.

The spelling of 3081644389 in words is "three billion, eighty-one million, six hundred forty-four thousand, three hundred eighty-nine".