1800804984 has 32 divisors (see below), whose sum is σ = 4911287040. Its totient is φ = 545698400.

The previous prime is 1800804983. The next prime is 1800804989. The reversal of 1800804984 is 4894080081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800804983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3410352 + ... + 3410879.

It is an arithmetic number, because the mean of its divisors is an integer number (153477720).

Almost surely, 2^1800804984 is an apocalyptic number.

It is an amenable number.

1800804984 is an abundant number, since it is smaller than the sum of its proper divisors (3110482056).

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

1800804984 is a wasteful number, since it uses less digits than its factorization.

1800804984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821251 (or 6821247 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 1800804984 is about 42435.8926381901. The cubic root of 1800804984 is about 1216.6217082113.

The spelling of 1800804984 in words is "one billion, eight hundred million, eight hundred four thousand, nine hundred eighty-four".