3653872128 has 60 divisors (see below), whose sum is σ = 10545335658. Its totient is φ = 1217955840.

The previous prime is 3653872093. The next prime is 3653872141. The reversal of 3653872128 is 8212783563.

3653872128 is a `hidden beast` number, since 36 + 538 + 72 + 12 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1945868544 + 1708003584 = 44112^2 + 41328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 391863 + ... + 401078.

Almost surely, 2^3653872128 is an apocalyptic number.

It is an amenable number.

3653872128 is an abundant number, since it is smaller than the sum of its proper divisors (6891463530).

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

3653872128 is an equidigital number, since it uses as much as digits as its factorization.

3653872128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792965 (or 792946 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 3653872128 is about 60447.2673327753. The cubic root of 3653872128 is about 1540.2259925835.

The spelling of 3653872128 in words is "three billion, six hundred fifty-three million, eight hundred seventy-two thousand, one hundred twenty-eight".