4721381808 has 80 divisors (see below), whose sum is σ = 14329249536. Its totient is φ = 1320664320.

The previous prime is 4721381803. The next prime is 4721381827. The reversal of 4721381808 is 8081831274.

It is a self number, because there is not a number n which added to its sum of digits gives 4721381808.

It is not an unprimeable number, because it can be changed into a prime (4721381803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337060 + ... + 350787.

Almost surely, 2^4721381808 is an apocalyptic number.

4721381808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4721381808 is an abundant number, since it is smaller than the sum of its proper divisors (9607867728).

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

4721381808 is a wasteful number, since it uses less digits than its factorization.

4721381808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687882 (or 687876 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 4721381808 is about 68712.3119098754. The cubic root of 4721381808 is about 1677.6049829649.

The spelling of 4721381808 in words is "four billion, seven hundred twenty-one million, three hundred eighty-one thousand, eight hundred eight".