1608197287583 has 2 divisors, whose sum is σ = 1608197287584. Its totient is φ = 1608197287582.

The previous prime is 1608197287573. The next prime is 1608197287777. The reversal of 1608197287583 is 3857827918061.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1608197287583 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1608197287573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804098643791 + 804098643792.

It is an arithmetic number, because the mean of its divisors is an integer number (804098643792).

Almost surely, 2^{1608197287583} is an apocalyptic number.

1608197287583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608197287583 is an equidigital number, since it uses as much as digits as its factorization.

1608197287583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40642560, while the sum is 65.

The spelling of 1608197287583 in words is "one trillion, six hundred eight billion, one hundred ninety-seven million, two hundred eighty-seven thousand, five hundred eighty-three".