4644691980 has 48 divisors (see below), whose sum is σ = 13012016640. Its totient is φ = 1237929408.

The previous prime is 4644691979. The next prime is 4644691981. The reversal of 4644691980 is 891964464.

It is an interprime number because it is at equal distance from previous prime (4644691979) and next prime (4644691981).

It is not an unprimeable number, because it can be changed into a prime (4644691981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99741 + ... + 138699.

It is an arithmetic number, because the mean of its divisors is an integer number (271083680).

Almost surely, 2^4644691980 is an apocalyptic number.

It is an amenable number.

4644691980 is an abundant number, since it is smaller than the sum of its proper divisors (8367324660).

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

4644691980 is a wasteful number, since it uses less digits than its factorization.

4644691980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40958 (or 40956 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 4644691980 is about 68151.9770806394. The cubic root of 4644691980 is about 1668.4721920517.

The spelling of 4644691980 in words is "four billion, six hundred forty-four million, six hundred ninety-one thousand, nine hundred eighty".