1608320447 has 8 divisors (see below), whose sum is σ = 1617713136. Its totient is φ = 1598954112.

The previous prime is 1608320419. The next prime is 1608320491. The reversal of 1608320447 is 7440238061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1608320447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608320347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123143 + ... + 135575.

It is an arithmetic number, because the mean of its divisors is an integer number (202214142).

Almost surely, 2^1608320447 is an apocalyptic number.

1608320447 is a deficient number, since it is larger than the sum of its proper divisors (9392689).

1608320447 is a wasteful number, since it uses less digits than its factorization.

1608320447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1608320447 is about 40103.8707234102. The cubic root of 1608320447 is about 1171.6310188910.

The spelling of 1608320447 in words is "one billion, six hundred eight million, three hundred twenty thousand, four hundred forty-seven".