4489261680 has 40 divisors (see below), whose sum is σ = 13916711952. Its totient is φ = 1197136384.

The previous prime is 4489261669. The next prime is 4489261687. The reversal of 4489261680 is 861629844.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4489261687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9352389 + ... + 9352868.

Almost surely, 2^4489261680 is an apocalyptic number.

4489261680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4489261680 is an abundant number, since it is smaller than the sum of its proper divisors (9427450272).

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

4489261680 is a wasteful number, since it uses less digits than its factorization.

4489261680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18705273 (or 18705267 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 4489261680 is about 67001.9528073623. The cubic root of 4489261680 is about 1649.6493506478.

The spelling of 4489261680 in words is "four billion, four hundred eighty-nine million, two hundred sixty-one thousand, six hundred eighty".