1604803536 has 640 divisors, whose sum is σ = 6171033600. Its totient is φ = 388177920.

The previous prime is 1604803429. The next prime is 1604803573. The reversal of 1604803536 is 6353084061.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1604803536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30279286 + ... + 30279338.

It is an arithmetic number, because the mean of its divisors is an integer number (9642240).

Almost surely, 2^1604803536 is an apocalyptic number.

1604803536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604803536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3085516800).

1604803536 is an abundant number, since it is smaller than the sum of its proper divisors (4566230064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604803536 is a wasteful number, since it uses less digits than its factorization.

1604803536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1604803536 is about 40059.9992011982. Note that the first 3 decimals coincide. The cubic root of 1604803536 is about 1170.7763946098.

Adding to 1604803536 its reverse (6353084061), we get a palindrome (7957887597).

The spelling of 1604803536 in words is "one billion, six hundred four million, eight hundred three thousand, five hundred thirty-six".