6366456409 has 2 divisors, whose sum is σ = 6366456410. Its totient is φ = 6366456408.

The previous prime is 6366456347. The next prime is 6366456493. The reversal of 6366456409 is 9046546636.

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., 4362998809 + 2003457600 = 66053^2 + 44760^2 .

It is a cyclic number.

It is not a de Polignac number, because 6366456409 - 2¹³ = 6366448217 is a prime.

It is not a weakly prime, because it can be changed into another prime (6366456209) 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, 3183228204 + 3183228205.

It is an arithmetic number, because the mean of its divisors is an integer number (3183228205).

Almost surely, 2^6366456409 is an apocalyptic number.

It is an amenable number.

6366456409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6366456409 is an equidigital number, since it uses as much as digits as its factorization.

6366456409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The square root of 6366456409 is about 79790.0771336887. The cubic root of 6366456409 is about 1853.3861925695.

The spelling of 6366456409 in words is "six billion, three hundred sixty-six million, four hundred fifty-six thousand, four hundred nine".