4561638328 has 32 divisors (see below), whose sum is σ = 9221027760. Its totient is φ = 2103079680.

The previous prime is 4561638287. The next prime is 4561638331. The reversal of 4561638328 is 8238361654.

It is a congruent number.

It is an unprimeable number.

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, 74043 + ... + 120853.

Almost surely, 2^4561638328 is an apocalyptic number.

It is an amenable number.

4561638328 is an abundant number, since it is smaller than the sum of its proper divisors (4659389432).

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

4561638328 is a wasteful number, since it uses less digits than its factorization.

4561638328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47767 (or 47763 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 4561638328 is about 67539.9017470414. The cubic root of 4561638328 is about 1658.4674402280.

The spelling of 4561638328 in words is "four billion, five hundred sixty-one million, six hundred thirty-eight thousand, three hundred twenty-eight".