4641487668 has 18 divisors (see below), whose sum is σ = 11732649474. Its totient is φ = 1547162544.

The previous prime is 4641487663. The next prime is 4641487691. The reversal of 4641487668 is 8667841464.

It can be written as a sum of positive squares in only one way, i.e., 2992965264 + 1648522404 = 54708^2 + 40602^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4641487663) 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 5 ways as a sum of consecutive naturals, for example, 64465071 + ... + 64465142.

Almost surely, 2^4641487668 is an apocalyptic number.

It is an amenable number.

4641487668 is an abundant number, since it is smaller than the sum of its proper divisors (7091161806).

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

4641487668 is a wasteful number, since it uses less digits than its factorization.

4641487668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128930223 (or 128930218 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The square root of 4641487668 is about 68128.4644476888. The cubic root of 4641487668 is about 1668.0884181000.

The spelling of 4641487668 in words is "four billion, six hundred forty-one million, four hundred eighty-seven thousand, six hundred sixty-eight".