4547921856 has 56 divisors (see below), whose sum is σ = 12230337744. Its totient is φ = 1491118080.

The previous prime is 4547921809. The next prime is 4547921879. The reversal of 4547921856 is 6581297454.

It is a junction number, because it is equal to n+sod(n) for n = 4547921799 and 4547921808.

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, 182445 + ... + 205868.

Almost surely, 2^4547921856 is an apocalyptic number.

It is an amenable number.

4547921856 is an abundant number, since it is smaller than the sum of its proper divisors (7682415888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4547921856 is a wasteful number, since it uses less digits than its factorization.

4547921856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388389 (or 388379 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 4547921856 is about 67438.2818286469. The cubic root of 4547921856 is about 1656.8034794962.

The spelling of 4547921856 in words is "four billion, five hundred forty-seven million, nine hundred twenty-one thousand, eight hundred fifty-six".