1804002012 has 36 divisors (see below), whose sum is σ = 4615065000. Its totient is φ = 594088032.

The previous prime is 1804001999. The next prime is 1804002017. The reversal of 1804002012 is 2102004081.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804002017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298887 + ... + 304862.

It is an arithmetic number, because the mean of its divisors is an integer number (128196250).

Almost surely, 2^1804002012 is an apocalyptic number.

1804002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1804002012 is an abundant number, since it is smaller than the sum of its proper divisors (2811062988).

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

1804002012 is a wasteful number, since it uses less digits than its factorization.

1804002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603842 (or 603837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1804002012 is about 42473.5448485289. The cubic root of 1804002012 is about 1217.3412520091.

Adding to 1804002012 its reverse (2102004081), we get a palindrome (3906006093).

The spelling of 1804002012 in words is "one billion, eight hundred four million, two thousand, twelve".