1660804393284 has 27 divisors (see below), whose sum is σ = 4198163984287. Its totient is φ = 553598886984.

The previous prime is 1660804393253. The next prime is 1660804393331. The reversal of 1660804393284 is 4823934080661.

The square root of 1660804393284 is 1288722.

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

1660804393284 is a `hidden beast` number, since 1 + 6 + 608 + 0 + 4 + 3 + 9 + 3 + 28 + 4 = 666.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1660804393284.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7624939 + ... + 7839725.

Almost surely, 2^{1660804393284} is an apocalyptic number.

1660804393284 is the 1288722-nd square number.

It is an amenable number.

1660804393284 is an abundant number, since it is smaller than the sum of its proper divisors (2537359591003).

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

1660804393284 is an frugal number, since it uses more digits than its factorization.

1660804393284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429584 (or 214792 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 1660804393284 in words is "one trillion, six hundred sixty billion, eight hundred four million, three hundred ninety-three thousand, two hundred eighty-four".