6448143787 has 2 divisors, whose sum is σ = 6448143788. Its totient is φ = 6448143786.

The previous prime is 6448143769. The next prime is 6448143797. The reversal of 6448143787 is 7873418446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448143787 is a prime.

It is not a weakly prime, because it can be changed into another prime (6448143727) 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, 3224071893 + 3224071894.

It is an arithmetic number, because the mean of its divisors is an integer number (3224071894).

Almost surely, 2^6448143787 is an apocalyptic number.

6448143787 is a deficient number, since it is larger than the sum of its proper divisors (1).

6448143787 is an equidigital number, since it uses as much as digits as its factorization.

6448143787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3612672, while the sum is 52.

The square root of 6448143787 is about 80300.3349121285. The cubic root of 6448143787 is about 1861.2794013935.

The spelling of 6448143787 in words is "six billion, four hundred forty-eight million, one hundred forty-three thousand, seven hundred eighty-seven".