1804671053840 has 40 divisors (see below), whose sum is σ = 4196170956888. Its totient is φ = 721814958080.

The previous prime is 1804671053819. The next prime is 1804671053869. The reversal of 1804671053840 is 483501764081.

It can be written as a sum of positive squares in 4 ways, for example, as 161423954176 + 1643247099664 = 401776^2 + 1281892^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1804671053840² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 260480 + ... + 1917600.

Almost surely, 2^{1804671053840} is an apocalyptic number.

1804671053840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1804671053840 is an abundant number, since it is smaller than the sum of its proper divisors (2391499903048).

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

1804671053840 is a wasteful number, since it uses less digits than its factorization.

1804671053840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670747 (or 1670741 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 1804671053840 in words is "one trillion, eight hundred four billion, six hundred seventy-one million, fifty-three thousand, eight hundred forty".