1608478444 has 24 divisors (see below), whose sum is σ = 2847201840. Its totient is φ = 795012096.

The previous prime is 1608478411. The next prime is 1608478471. The reversal of 1608478444 is 4448748061.

It is a super-2 number, since 2×1608478444² = 5174405809625322272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1608478394 and 1608478403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423747 + ... + 427525.

It is an arithmetic number, because the mean of its divisors is an integer number (118633410).

Almost surely, 2^1608478444 is an apocalyptic number.

It is an amenable number.

1608478444 is a deficient number, since it is larger than the sum of its proper divisors (1238723396).

1608478444 is a wasteful number, since it uses less digits than its factorization.

1608478444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977 (or 4975 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 46.

The square root of 1608478444 is about 40105.8405222980. The cubic root of 1608478444 is about 1171.6693835766.

The spelling of 1608478444 in words is "one billion, six hundred eight million, four hundred seventy-eight thousand, four hundred forty-four".