1809204004 has 6 divisors (see below), whose sum is σ = 3166107014. Its totient is φ = 904602000.

The previous prime is 1809203987. The next prime is 1809204013. The reversal of 1809204004 is 4004029081.

It can be written as a sum of positive squares in only one way, i.e., 1343075904 + 466128100 = 36648^2 + 21590^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226150497 + ... + 226150504.

Almost surely, 2^1809204004 is an apocalyptic number.

It is an amenable number.

1809204004 is a deficient number, since it is larger than the sum of its proper divisors (1356903010).

1809204004 is a wasteful number, since it uses less digits than its factorization.

1809204004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452301005 (or 452301003 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1809204004 is about 42534.7387907814. The cubic root of 1809204004 is about 1218.5102311793.

The spelling of 1809204004 in words is "one billion, eight hundred nine million, two hundred four thousand, four".