6478989454 has 16 divisors (see below), whose sum is σ = 11108026368. Its totient is φ = 2776412952.

The previous prime is 6478989449. The next prime is 6478989463. The reversal of 6478989454 is 4549898746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156907 + ... + 193849.

It is an arithmetic number, because the mean of its divisors is an integer number (694251648).

Almost surely, 2^6478989454 is an apocalyptic number.

6478989454 is a deficient number, since it is larger than the sum of its proper divisors (4629036914).

6478989454 is a wasteful number, since it uses less digits than its factorization.

6478989454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49479.

The product of its digits is 69672960, while the sum is 64.

The square root of 6478989454 is about 80492.1701409522. The cubic root of 6478989454 is about 1864.2425849112.

The spelling of 6478989454 in words is "six billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, four hundred fifty-four".