3628618865 has 4 divisors (see below), whose sum is σ = 4354342644. Its totient is φ = 2902895088.

The previous prime is 3628618801. The next prime is 3628618883. The reversal of 3628618865 is 5688168263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2755830016 + 872788849 = 52496^2 + 29543^2 .

It is a cyclic number.

It is not a de Polignac number, because 3628618865 - 2⁶ = 3628618801 is a prime.

It is a super-3 number, since 3×3628618865³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 362861882 + ... + 362861891.

It is an arithmetic number, because the mean of its divisors is an integer number (1088585661).

Almost surely, 2^3628618865 is an apocalyptic number.

It is an amenable number.

3628618865 is a deficient number, since it is larger than the sum of its proper divisors (725723779).

3628618865 is an equidigital number, since it uses as much as digits as its factorization.

3628618865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725723778.

The product of its digits is 3317760, while the sum is 53.

The square root of 3628618865 is about 60238.0184352042. The cubic root of 3628618865 is about 1536.6694290292.

The spelling of 3628618865 in words is "three billion, six hundred twenty-eight million, six hundred eighteen thousand, eight hundred sixty-five".