4382641640 has 32 divisors (see below), whose sum is σ = 10619479080. Its totient is φ = 1618205952.

The previous prime is 4382641639. The next prime is 4382641663. The reversal of 4382641640 is 461462834.

It can be written as a sum of positive squares in 4 ways, for example, as 3194736484 + 1187905156 = 56522^2 + 34466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4382641594 and 4382641603.

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, 4213559 + ... + 4214598.

Almost surely, 2^4382641640 is an apocalyptic number.

4382641640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4382641640 is an abundant number, since it is smaller than the sum of its proper divisors (6236837440).

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

4382641640 is a wasteful number, since it uses less digits than its factorization.

4382641640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428181 (or 8428177 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 4382641640 is about 66201.5229432073. The cubic root of 4382641640 is about 1636.4848416431.

The spelling of 4382641640 in words is "four billion, three hundred eighty-two million, six hundred forty-one thousand, six hundred forty".