1604411806 has 4 divisors (see below), whose sum is σ = 2406617712. Its totient is φ = 802205902.

The previous prime is 1604411803. The next prime is 1604411849. The reversal of 1604411806 is 6081144061.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604411801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401102950 + ... + 401102953.

It is an arithmetic number, because the mean of its divisors is an integer number (601654428).

Almost surely, 2^1604411806 is an apocalyptic number.

1604411806 is a deficient number, since it is larger than the sum of its proper divisors (802205906).

1604411806 is an equidigital number, since it uses as much as digits as its factorization.

1604411806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802205905.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1604411806 is about 40055.1096116338. The cubic root of 1604411806 is about 1170.6811253035.

Adding to 1604411806 its reverse (6081144061), we get a palindrome (7685555867).

The spelling of 1604411806 in words is "one billion, six hundred four million, four hundred eleven thousand, eight hundred six".