4573681641 has 9 divisors (see below), whose sum is σ = 6606722109. Its totient is φ = 3048985836.

The previous prime is 4573681639. The next prime is 4573681657. The reversal of 4573681641 is 1461863754.

The square root of 4573681641 is 67629.

It is a perfect power (a square), and thus also a powerful number.

4573681641 is a `hidden beast` number, since 4 + 573 + 68 + 16 + 4 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 4573681641 - 2¹ = 4573681639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4573681631) 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 8 ways as a sum of consecutive naturals, for example, 191616 + ... + 214158.

Almost surely, 2^4573681641 is an apocalyptic number.

4573681641 is the 67629-th square number.

4573681641 is the 33815-th centered octagonal number.

It is an amenable number.

4573681641 is a deficient number, since it is larger than the sum of its proper divisors (2033040468).

4573681641 is an frugal number, since it uses more digits than its factorization.

4573681641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45092 (or 22546 counting only the distinct ones).

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

The cubic root of 4573681641 is about 1659.9256802504.

The spelling of 4573681641 in words is "four billion, five hundred seventy-three million, six hundred eighty-one thousand, six hundred forty-one".