4381785864 has 48 divisors (see below), whose sum is σ = 11909624220. Its totient is φ = 1455390720.

The previous prime is 4381785851. The next prime is 4381785869. The reversal of 4381785864 is 4685871834.

4381785864 is a `hidden beast` number, since 43 + 8 + 17 + 8 + 586 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4375822500 + 5963364 = 66150^2 + 2442^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4381785864.

It is not an unprimeable number, because it can be changed into a prime (4381785869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88057 + ... + 128520.

Almost surely, 2^4381785864 is an apocalyptic number.

It is an amenable number.

4381785864 is an abundant number, since it is smaller than the sum of its proper divisors (7527838356).

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

4381785864 is a wasteful number, since it uses less digits than its factorization.

4381785864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216870 (or 216863 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 4381785864 is about 66195.0592113943. The cubic root of 4381785864 is about 1636.3783187033.

The spelling of 4381785864 in words is "four billion, three hundred eighty-one million, seven hundred eighty-five thousand, eight hundred sixty-four".