4559491636 has 96 divisors (see below), whose sum is σ = 9796505600. Its totient is φ = 1813518720.

The previous prime is 4559491631. The next prime is 4559491709. The reversal of 4559491636 is 6361949554.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4559491631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6598051 + ... + 6598741.

Almost surely, 2^4559491636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4559491636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4898252800).

4559491636 is an abundant number, since it is smaller than the sum of its proper divisors (5237013964).

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

4559491636 is a wasteful number, since it uses less digits than its factorization.

4559491636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 955 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 52.

The square root of 4559491636 is about 67524.0078490606. The cubic root of 4559491636 is about 1658.2072429661.

The spelling of 4559491636 in words is "four billion, five hundred fifty-nine million, four hundred ninety-one thousand, six hundred thirty-six".