3638845160 has 32 divisors (see below), whose sum is σ = 8229840840. Its totient is φ = 1447993344.

The previous prime is 3638845129. The next prime is 3638845163. The reversal of 3638845160 is 615488363.

It can be written as a sum of positive squares in 4 ways, for example, as 2739684964 + 899160196 = 52342^2 + 29986^2 .

It is not an unprimeable number, because it can be changed into a prime (3638845163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227957 + ... + 243396.

Almost surely, 2^3638845160 is an apocalyptic number.

It is an amenable number.

3638845160 is an abundant number, since it is smaller than the sum of its proper divisors (4590995680).

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

3638845160 is a wasteful number, since it uses less digits than its factorization.

3638845160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471557 (or 471553 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 3638845160 is about 60322.8411134622. The cubic root of 3638845160 is about 1538.1116394347. Note that the first 3 decimals are identical.

The spelling of 3638845160 in words is "three billion, six hundred thirty-eight million, eight hundred forty-five thousand, one hundred sixty".