1604216563 has 2 divisors, whose sum is σ = 1604216564. Its totient is φ = 1604216562.

The previous prime is 1604216557. The next prime is 1604216567. The reversal of 1604216563 is 3656124061.

It is a strong prime.

It is an emirp because it is prime and its reverse (3656124061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1604216563 - 2¹⁷ = 1604085491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604216567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802108281 + 802108282.

It is an arithmetic number, because the mean of its divisors is an integer number (802108282).

Almost surely, 2^1604216563 is an apocalyptic number.

1604216563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604216563 is an equidigital number, since it uses as much as digits as its factorization.

1604216563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1604216563 is about 40052.6723577841. The cubic root of 1604216563 is about 1170.6336361310.

The spelling of 1604216563 in words is "one billion, six hundred four million, two hundred sixteen thousand, five hundred sixty-three".