6489284381 has 2 divisors, whose sum is σ = 6489284382. Its totient is φ = 6489284380.

The previous prime is 6489284311. The next prime is 6489284449. The reversal of 6489284381 is 1834829846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6385448281 + 103836100 = 79909^2 + 10190^2 .

It is a cyclic number.

It is not a de Polignac number, because 6489284381 - 2¹⁴ = 6489267997 is a prime.

It is a super-2 number, since 2×6489284381² = 84221623554981106322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6489284311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3244642190 + 3244642191.

It is an arithmetic number, because the mean of its divisors is an integer number (3244642191).

Almost surely, 2^6489284381 is an apocalyptic number.

It is an amenable number.

6489284381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6489284381 is an equidigital number, since it uses as much as digits as its factorization.

6489284381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2654208, while the sum is 53.

The square root of 6489284381 is about 80556.0946235603. The cubic root of 6489284381 is about 1865.2294715811.

The spelling of 6489284381 in words is "six billion, four hundred eighty-nine million, two hundred eighty-four thousand, three hundred eighty-one".