1608456349 has 4 divisors (see below), whose sum is σ = 1638804636. Its totient is φ = 1578108064.

The previous prime is 1608456329. The next prime is 1608456373. The reversal of 1608456349 is 9436548061.

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 480705625 + 1127750724 = 21925^2 + 33582^2 .

It is a cyclic number.

It is not a de Polignac number, because 1608456349 - 2⁷ = 1608456221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1608456299 and 1608456308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608456329) 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, 15174064 + ... + 15174169.

It is an arithmetic number, because the mean of its divisors is an integer number (409701159).

Almost surely, 2^1608456349 is an apocalyptic number.

It is an amenable number.

1608456349 is a deficient number, since it is larger than the sum of its proper divisors (30348287).

1608456349 is an equidigital number, since it uses as much as digits as its factorization.

1608456349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30348286.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 1608456349 is about 40105.5650627192. The cubic root of 1608456349 is about 1171.6640186402.

The spelling of 1608456349 in words is "one billion, six hundred eight million, four hundred fifty-six thousand, three hundred forty-nine".