1804721852 has 12 divisors (see below), whose sum is σ = 3267169080. Its totient is φ = 871244976.

The previous prime is 1804721851. The next prime is 1804721861. The reversal of 1804721852 is 2581274081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804721851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7778858 + ... + 7779089.

It is an arithmetic number, because the mean of its divisors is an integer number (272264090).

Almost surely, 2^1804721852 is an apocalyptic number.

It is an amenable number.

1804721852 is a deficient number, since it is larger than the sum of its proper divisors (1462447228).

1804721852 is a wasteful number, since it uses less digits than its factorization.

1804721852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15557980 (or 15557978 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 1804721852 is about 42482.0179840836. The cubic root of 1804721852 is about 1217.5031465807.

The spelling of 1804721852 in words is "one billion, eight hundred four million, seven hundred twenty-one thousand, eight hundred fifty-two".