4581681424 has 20 divisors (see below), whose sum is σ = 9399185244. Its totient is φ = 2156085248.

The previous prime is 4581681409. The next prime is 4581681449. The reversal of 4581681424 is 4241861854.

It can be written as a sum of positive squares in 2 ways, for example, as 2378317824 + 2203363600 = 48768^2 + 46940^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8421937 + ... + 8422480.

Almost surely, 2^4581681424 is an apocalyptic number.

It is an amenable number.

4581681424 is an abundant number, since it is smaller than the sum of its proper divisors (4817503820).

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

4581681424 is a wasteful number, since it uses less digits than its factorization.

4581681424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16844442 (or 16844436 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 4581681424 is about 67688.1187801818. The cubic root of 4581681424 is about 1660.8929032821.

The spelling of 4581681424 in words is "four billion, five hundred eighty-one million, six hundred eighty-one thousand, four hundred twenty-four".