1604543312 has 40 divisors (see below), whose sum is σ = 3292601760. Its totient is φ = 755360640.

The previous prime is 1604543309. The next prime is 1604543363. The reversal of 1604543312 is 2133454061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33362 + ... + 65742.

It is an arithmetic number, because the mean of its divisors is an integer number (82315044).

Almost surely, 2^1604543312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604543312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646300880).

1604543312 is an abundant number, since it is smaller than the sum of its proper divisors (1688058448).

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

1604543312 is a wasteful number, since it uses less digits than its factorization.

1604543312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32571 (or 32565 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1604543312 is about 40056.7511413494. The cubic root of 1604543312 is about 1170.7131094831.

Adding to 1604543312 its reverse (2133454061), we get a palindrome (3737997373).

The spelling of 1604543312 in words is "one billion, six hundred four million, five hundred forty-three thousand, three hundred twelve".