1809604304 has 80 divisors (see below), whose sum is σ = 3903500160. Its totient is φ = 808304640.

The previous prime is 1809604301. The next prime is 1809604361. The reversal of 1809604304 is 4034069081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809604301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868544 + ... + 870624.

It is an arithmetic number, because the mean of its divisors is an integer number (48793752).

Almost surely, 2^1809604304 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 1809604304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1951750080).

1809604304 is an abundant number, since it is smaller than the sum of its proper divisors (2093895856).

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

1809604304 is a wasteful number, since it uses less digits than its factorization.

1809604304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1809604304 is about 42539.4440960387. Note that the first 3 decimals coincide. The cubic root of 1809604304 is about 1218.6000927380.

The spelling of 1809604304 in words is "one billion, eight hundred nine million, six hundred four thousand, three hundred four".