1608964393 has 2 divisors, whose sum is σ = 1608964394. Its totient is φ = 1608964392.

The previous prime is 1608964381. The next prime is 1608964429. The reversal of 1608964393 is 3934698061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1539542169 + 69422224 = 39237^2 + 8332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1608964393 - 2¹³ = 1608956201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1608964193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804482196 + 804482197.

It is an arithmetic number, because the mean of its divisors is an integer number (804482197).

Almost surely, 2^1608964393 is an apocalyptic number.

It is an amenable number.

1608964393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608964393 is an equidigital number, since it uses as much as digits as its factorization.

1608964393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 1608964393 is about 40111.8983968598. The cubic root of 1608964393 is about 1171.7873655195.

The spelling of 1608964393 in words is "one billion, six hundred eight million, nine hundred sixty-four thousand, three hundred ninety-three".