4432887638 has 16 divisors (see below), whose sum is σ = 6851037024. Its totient is φ = 2149594560.

The previous prime is 4432887623. The next prime is 4432887691. The reversal of 4432887638 is 8367882344.

It is a happy number.

It is a super-2 number, since 2×4432887638² = 39300985622266438088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4432887638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73295 + ... + 119322.

It is an arithmetic number, because the mean of its divisors is an integer number (428189814).

Almost surely, 2^4432887638 is an apocalyptic number.

4432887638 is a deficient number, since it is larger than the sum of its proper divisors (2418149386).

4432887638 is a wasteful number, since it uses less digits than its factorization.

4432887638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192967.

The product of its digits is 6193152, while the sum is 53.

The square root of 4432887638 is about 66579.9341994268. The cubic root of 4432887638 is about 1642.7150691196.

The spelling of 4432887638 in words is "four billion, four hundred thirty-two million, eight hundred eighty-seven thousand, six hundred thirty-eight".