6453984569 has 2 divisors, whose sum is σ = 6453984570. Its totient is φ = 6453984568.

The previous prime is 6453984547. The next prime is 6453984583. The reversal of 6453984569 is 9654893546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6195578944 + 258405625 = 78712^2 + 16075^2 .

It is a cyclic number.

It is not a de Polignac number, because 6453984569 - 2¹² = 6453980473 is a prime.

It is a super-2 number, since 2×6453984569² = 83307833633780231522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6453984169) 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, 3226992284 + 3226992285.

It is an arithmetic number, because the mean of its divisors is an integer number (3226992285).

Almost surely, 2^6453984569 is an apocalyptic number.

It is an amenable number.

6453984569 is a deficient number, since it is larger than the sum of its proper divisors (1).

6453984569 is an equidigital number, since it uses as much as digits as its factorization.

6453984569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27993600, while the sum is 59.

The square root of 6453984569 is about 80336.6950340876. The cubic root of 6453984569 is about 1861.8412192224.

The spelling of 6453984569 in words is "six billion, four hundred fifty-three million, nine hundred eighty-four thousand, five hundred sixty-nine".