4445532645 has 32 divisors (see below), whose sum is σ = 7223385600. Its totient is φ = 2334334464.

The previous prime is 4445532631. The next prime is 4445532653. The reversal of 4445532645 is 5462355444.

It is a happy number.

It is not a de Polignac number, because 4445532645 - 2⁴ = 4445532629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4445532597 and 4445532606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312099 + ... + 326031.

It is an arithmetic number, because the mean of its divisors is an integer number (225730800).

Almost surely, 2^4445532645 is an apocalyptic number.

It is an amenable number.

4445532645 is a deficient number, since it is larger than the sum of its proper divisors (2777852955).

4445532645 is a wasteful number, since it uses less digits than its factorization.

4445532645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14269.

The product of its digits is 1152000, while the sum is 42.

The square root of 4445532645 is about 66674.8276713184. The cubic root of 4445532645 is about 1644.2755586043.

The spelling of 4445532645 in words is "four billion, four hundred forty-five million, five hundred thirty-two thousand, six hundred forty-five".