1804307988 has 72 divisors (see below), whose sum is σ = 5185518912. Its totient is φ = 485189376.

The previous prime is 1804307977. The next prime is 1804308017. The reversal of 1804307988 is 8897034081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80256 + ... + 100247.

It is an arithmetic number, because the mean of its divisors is an integer number (72021096).

Almost surely, 2^1804307988 is an apocalyptic number.

It is an amenable number.

1804307988 is an abundant number, since it is smaller than the sum of its proper divisors (3381210924).

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

1804307988 is a wasteful number, since it uses less digits than its factorization.

1804307988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180541 (or 180532 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 1804307988 is about 42477.1466555841. The cubic root of 1804307988 is about 1217.4100723592.

The spelling of 1804307988 in words is "one billion, eight hundred four million, three hundred seven thousand, nine hundred eighty-eight".