1608819 has 4 divisors (see below), whose sum is σ = 2145096. Its totient is φ = 1072544.

The previous prime is 1608773. The next prime is 1608821. The reversal of 1608819 is 9188061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1608819 - 2¹¹ = 1606771 is a prime.

It is a super-2 number, since 2×1608819² = 5176597149522, which contains 22 as substring.

It is a D-number.

1608819 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1608819.

It is not an unprimeable number, because it can be changed into a prime (1608839) 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, 268134 + ... + 268139.

It is an arithmetic number, because the mean of its divisors is an integer number (536274).

2^1608819 is an apocalyptic number.

1608819 is a deficient number, since it is larger than the sum of its proper divisors (536277).

1608819 is an equidigital number, since it uses as much as digits as its factorization.

1608819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536276.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1608819 is about 1268.3922894751. The cubic root of 1608819 is about 117.1752068527.

The spelling of 1608819 in words is "one million, six hundred eight thousand, eight hundred nineteen".