1663084805 has 8 divisors (see below), whose sum is σ = 2082471552. Its totient is φ = 1272621328.

The previous prime is 1663084793. The next prime is 1663084817. The reversal of 1663084805 is 5084803661.

It is an interprime number because it is at equal distance from previous prime (1663084793) and next prime (1663084817).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1663084805 - 2¹⁶ = 1663019269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7230689 + ... + 7230918.

It is an arithmetic number, because the mean of its divisors is an integer number (260308944).

Almost surely, 2^1663084805 is an apocalyptic number.

It is an amenable number.

1663084805 is a deficient number, since it is larger than the sum of its proper divisors (419386747).

1663084805 is a wasteful number, since it uses less digits than its factorization.

1663084805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14461635.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1663084805 is about 40780.9367842378. The cubic root of 1663084805 is about 1184.7811389973.

The spelling of 1663084805 in words is "one billion, six hundred sixty-three million, eighty-four thousand, eight hundred five".