442245818 has 16 divisors (see below), whose sum is σ = 758782080. Its totient is φ = 189372336.

The previous prime is 442245779. The next prime is 442245821. The reversal of 442245818 is 818542244.

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, 4355 + ... + 30057.

It is an arithmetic number, because the mean of its divisors is an integer number (47423880).

Almost surely, 2^442245818 is an apocalyptic number.

442245818 is a deficient number, since it is larger than the sum of its proper divisors (316536262).

442245818 is a wasteful number, since it uses less digits than its factorization.

442245818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26941.

The product of its digits is 81920, while the sum is 38.

The square root of 442245818 is about 21029.6414139661. The cubic root of 442245818 is about 761.8823480818.

The spelling of 442245818 in words is "four hundred forty-two million, two hundred forty-five thousand, eight hundred eighteen".