1608911 has 2 divisors, whose sum is σ = 1608912. Its totient is φ = 1608910.

The previous prime is 1608883. The next prime is 1608913. The reversal of 1608911 is 1198061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1608911 is a prime.

Together with 1608913, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1608913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804455 + 804456.

It is an arithmetic number, because the mean of its divisors is an integer number (804456).

2^1608911 is an apocalyptic number.

1608911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608911 is an equidigital number, since it uses as much as digits as its factorization.

1608911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1608911 is about 1268.4285553392. The cubic root of 1608911 is about 117.1774403572.

The spelling of 1608911 in words is "one million, six hundred eight thousand, nine hundred eleven".