1804411904656 has 15 divisors (see below), whose sum is σ = 3496058475753. Its totient is φ = 902203265760.

The previous prime is 1804411904621. The next prime is 1804411904657. The reversal of 1804411904656 is 6564091144081.

It is a happy number.

The square root of 1804411904656 is 1343284.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 179704775056 + 1624707129600 = 423916^2 + 1274640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1804411904657) 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 2 ways as a sum of consecutive naturals, for example, 5205226 + ... + 5541046.

Almost surely, 2^{1804411904656} is an apocalyptic number.

1804411904656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1804411904656 is the 1343284-th square number.

It is an amenable number.

1804411904656 is a deficient number, since it is larger than the sum of its proper divisors (1691646571097).

1804411904656 is an frugal number, since it uses more digits than its factorization.

1804411904656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671650 (or 335823 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

Multiplying 1804411904656 by its sum of digits (49), we get a square (88416183328144 = 9402988²).

The spelling of 1804411904656 in words is "one trillion, eight hundred four billion, four hundred eleven million, nine hundred four thousand, six hundred fifty-six".