4455643806 has 24 divisors (see below), whose sum is σ = 9661611960. Its totient is φ = 1484027376.

The previous prime is 4455643771. The next prime is 4455643807. The reversal of 4455643806 is 6083465544.

4455643806 is a `hidden beast` number, since 4 + 4 + 5 + 564 + 3 + 80 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4455643807) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 75645 + ... + 120968.

It is an arithmetic number, because the mean of its divisors is an integer number (402567165).

Almost surely, 2^4455643806 is an apocalyptic number.

4455643806 is an abundant number, since it is smaller than the sum of its proper divisors (5205968154).

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

4455643806 is a wasteful number, since it uses less digits than its factorization.

4455643806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197880 (or 197877 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The square root of 4455643806 is about 66750.6090309294. The cubic root of 4455643806 is about 1645.5212245689.

The spelling of 4455643806 in words is "four billion, four hundred fifty-five million, six hundred forty-three thousand, eight hundred six".