1608210324209 has 4 divisors (see below), whose sum is σ = 1663665852660. Its totient is φ = 1552754795760.

The previous prime is 1608210324187. The next prime is 1608210324221. The reversal of 1608210324209 is 9024230128061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 800225069809 + 807985254400 = 894553^2 + 898880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1608210324209 - 2³² = 1603915356913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608210320209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27727764182 + ... + 27727764239.

It is an arithmetic number, because the mean of its divisors is an integer number (415916463165).

Almost surely, 2^{1608210324209} is an apocalyptic number.

It is an amenable number.

1608210324209 is a deficient number, since it is larger than the sum of its proper divisors (55455528451).

1608210324209 is an equidigital number, since it uses as much as digits as its factorization.

1608210324209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55455528450.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 1608210324209 in words is "one trillion, six hundred eight billion, two hundred ten million, three hundred twenty-four thousand, two hundred nine".