4443536645 has 32 divisors (see below), whose sum is σ = 5590705920. Its totient is φ = 3387225600.

The previous prime is 4443536639. The next prime is 4443536689. The reversal of 4443536645 is 5466353444.

It is not a de Polignac number, because 4443536645 - 2¹⁴ = 4443520261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4443536596 and 4443536605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2038166 + ... + 2040344.

It is an arithmetic number, because the mean of its divisors is an integer number (174709560).

Almost surely, 2^4443536645 is an apocalyptic number.

It is an amenable number.

4443536645 is a deficient number, since it is larger than the sum of its proper divisors (1147169275).

4443536645 is a wasteful number, since it uses less digits than its factorization.

4443536645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its digits is 2073600, while the sum is 44.

The square root of 4443536645 is about 66659.8578231307. The cubic root of 4443536645 is about 1644.0294339670.

The spelling of 4443536645 in words is "four billion, four hundred forty-three million, five hundred thirty-six thousand, six hundred forty-five".