5780391649 has 2 divisors, whose sum is σ = 5780391650. Its totient is φ = 5780391648.

The previous prime is 5780391613. The next prime is 5780391677. The reversal of 5780391649 is 9461930875.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4842072225 + 938319424 = 69585^2 + 30632^2 .

It is a cyclic number.

It is not a de Polignac number, because 5780391649 - 2⁷ = 5780391521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5780391596 and 5780391605.

It is not a weakly prime, because it can be changed into another prime (5780391949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890195824 + 2890195825.

It is an arithmetic number, because the mean of its divisors is an integer number (2890195825).

Almost surely, 2^5780391649 is an apocalyptic number.

It is an amenable number.

5780391649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5780391649 is an equidigital number, since it uses as much as digits as its factorization.

5780391649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 5780391649 is about 76028.8869377949. The cubic root of 5780391649 is about 1794.6747598589.

The spelling of 5780391649 in words is "five billion, seven hundred eighty million, three hundred ninety-one thousand, six hundred forty-nine".