6449780411 has 2 divisors, whose sum is σ = 6449780412. Its totient is φ = 6449780410.

The previous prime is 6449780371. The next prime is 6449780417. The reversal of 6449780411 is 1140879446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6449780411 - 2¹⁸ = 6449518267 is a prime.

It is not a weakly prime, because it can be changed into another prime (6449780417) 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, 3224890205 + 3224890206.

It is an arithmetic number, because the mean of its divisors is an integer number (3224890206).

Almost surely, 2^6449780411 is an apocalyptic number.

6449780411 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449780411 is an equidigital number, since it uses as much as digits as its factorization.

6449780411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 6449780411 is about 80310.5249080094. The cubic root of 6449780411 is about 1861.4368604987.

The spelling of 6449780411 in words is "six billion, four hundred forty-nine million, seven hundred eighty thousand, four hundred eleven".