1608321860 has 12 divisors (see below), whose sum is σ = 3377475948. Its totient is φ = 643328736.

The previous prime is 1608321859. The next prime is 1608321901. The reversal of 1608321860 is 681238061.

It can be written as a sum of positive squares in 2 ways, for example, as 903844096 + 704477764 = 30064^2 + 26542^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1608321860.

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 3 ways as a sum of consecutive naturals, for example, 40208027 + ... + 40208066.

It is an arithmetic number, because the mean of its divisors is an integer number (281456329).

Almost surely, 2^1608321860 is an apocalyptic number.

1608321860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608321860 is an abundant number, since it is smaller than the sum of its proper divisors (1769154088).

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

1608321860 is a wasteful number, since it uses less digits than its factorization.

1608321860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80416102 (or 80416100 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1608321860 is about 40103.8883401597. Note that the first 3 decimals coincide. The cubic root of 1608321860 is about 1171.6313620055.

The spelling of 1608321860 in words is "one billion, six hundred eight million, three hundred twenty-one thousand, eight hundred sixty".