1804621912 has 8 divisors (see below), whose sum is σ = 3383666100. Its totient is φ = 902310952.

The previous prime is 1804621877. The next prime is 1804621933. The reversal of 1804621912 is 2191264081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112788862 + ... + 112788877.

Almost surely, 2^1804621912 is an apocalyptic number.

It is an amenable number.

1804621912 is a deficient number, since it is larger than the sum of its proper divisors (1579044188).

1804621912 is a wasteful number, since it uses less digits than its factorization.

1804621912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225577745 (or 225577741 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1804621912 is about 42480.8417054088. The cubic root of 1804621912 is about 1217.4806722937.

Adding to 1804621912 its reverse (2191264081), we get a palindrome (3995885993).

The spelling of 1804621912 in words is "one billion, eight hundred four million, six hundred twenty-one thousand, nine hundred twelve".