445573818 has 48 divisors (see below), whose sum is σ = 1013650560. Its totient is φ = 145017576.

The previous prime is 445573789. The next prime is 445573853. The reversal of 445573818 is 818375544.

Its product of digits (537600) is a multiple of the sum of its prime factors (896).

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 23 ways as a sum of consecutive naturals, for example, 1063213 + ... + 1063631.

It is an arithmetic number, because the mean of its divisors is an integer number (21117720).

Almost surely, 2^445573818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445573818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506825280).

445573818 is an abundant number, since it is smaller than the sum of its proper divisors (568076742).

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

445573818 is an equidigital number, since it uses as much as digits as its factorization.

445573818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 471 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 445573818 is about 21108.6195190496. The cubic root of 445573818 is about 763.7886866131.

The spelling of 445573818 in words is "four hundred forty-five million, five hundred seventy-three thousand, eight hundred eighteen".