1804605312 has 32 divisors (see below), whose sum is σ = 4793483880. Its totient is φ = 601534976.

The previous prime is 1804605311. The next prime is 1804605343. The reversal of 1804605312 is 2135064081.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1804605312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804605311) 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, 2349363 + ... + 2350130.

Almost surely, 2^1804605312 is an apocalyptic number.

1804605312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1804605312 is an abundant number, since it is smaller than the sum of its proper divisors (2988878568).

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

1804605312 is an equidigital number, since it uses as much as digits as its factorization.

1804605312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699510 (or 4699498 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1804605312 is about 42480.6463227668. The cubic root of 1804605312 is about 1217.4769392419.

Adding to 1804605312 its reverse (2135064081), we get a palindrome (3939669393).

The spelling of 1804605312 in words is "one billion, eight hundred four million, six hundred five thousand, three hundred twelve".