6419478988 has 24 divisors (see below), whose sum is σ = 12105322208. Its totient is φ = 2961104256.

The previous prime is 6419478959. The next prime is 6419478991. The reversal of 6419478988 is 8898749146.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 55945 + ... + 126367.

Almost surely, 2^6419478988 is an apocalyptic number.

It is an amenable number.

6419478988 is a deficient number, since it is larger than the sum of its proper divisors (5685843220).

6419478988 is a wasteful number, since it uses less digits than its factorization.

6419478988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72193 (or 72191 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 64.

The square root of 6419478988 is about 80121.6511811882. The cubic root of 6419478988 is about 1858.5172392943.

The spelling of 6419478988 in words is "six billion, four hundred nineteen million, four hundred seventy-eight thousand, nine hundred eighty-eight".