4432537644 has 48 divisors (see below), whose sum is σ = 10922349312. Its totient is φ = 1396238272.

The previous prime is 4432537643. The next prime is 4432537649. The reversal of 4432537644 is 4467352344.

It is a junction number, because it is equal to n+sod(n) for n = 4432537596 and 4432537605.

It is not an unprimeable number, because it can be changed into a prime (4432537643) 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, 73839 + ... + 119654.

It is an arithmetic number, because the mean of its divisors is an integer number (227548944).

Almost surely, 2^4432537644 is an apocalyptic number.

It is an amenable number.

4432537644 is an abundant number, since it is smaller than the sum of its proper divisors (6489811668).

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

4432537644 is a wasteful number, since it uses less digits than its factorization.

4432537644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193606 (or 193604 counting only the distinct ones).

The product of its digits is 967680, while the sum is 42.

The square root of 4432537644 is about 66577.3057730635. The cubic root of 4432537644 is about 1642.6718350325.

Adding to 4432537644 its reverse (4467352344), we get a palindrome (8899889988).

The spelling of 4432537644 in words is "four billion, four hundred thirty-two million, five hundred thirty-seven thousand, six hundred forty-four".