4643681980 has 36 divisors (see below), whose sum is σ = 11343854088. Its totient is φ = 1592119200.

The previous prime is 4643681953. The next prime is 4643681981. The reversal of 4643681980 is 891863464.

It is a super-6 number, since 6×4643681980⁶ (a number of 59 digits) contains 666666 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643681981) 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 11 ways as a sum of consecutive naturals, for example, 2368246 + ... + 2370205.

It is an arithmetic number, because the mean of its divisors is an integer number (315107058).

Almost surely, 2^4643681980 is an apocalyptic number.

It is an amenable number.

4643681980 is an abundant number, since it is smaller than the sum of its proper divisors (6700172108).

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

4643681980 is a wasteful number, since it uses less digits than its factorization.

4643681980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738474 (or 4738465 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 4643681980 is about 68144.5667680117. The cubic root of 4643681980 is about 1668.3512454540.

The spelling of 4643681980 in words is "four billion, six hundred forty-three million, six hundred eighty-one thousand, nine hundred eighty".