8478915782 has 16 divisors (see below), whose sum is σ = 13064583312. Its totient is φ = 4124098080.

The previous prime is 8478915773. The next prime is 8478915793. The reversal of 8478915782 is 2875198748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672557 + ... + 685047.

It is an arithmetic number, because the mean of its divisors is an integer number (816536457).

Almost surely, 2^8478915782 is an apocalyptic number.

8478915782 is a deficient number, since it is larger than the sum of its proper divisors (4585667530).

8478915782 is a wasteful number, since it uses less digits than its factorization.

8478915782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21703.

The product of its digits is 9031680, while the sum is 59.

The square root of 8478915782 is about 92081.0283500353. The cubic root of 8478915782 is about 2039.1387321328.

The spelling of 8478915782 in words is "eight billion, four hundred seventy-eight million, nine hundred fifteen thousand, seven hundred eighty-two".