1663473384 has 96 divisors (see below), whose sum is σ = 4581813600. Its totient is φ = 545136000.

The previous prime is 1663473359. The next prime is 1663473407. The reversal of 1663473384 is 4833743661.

1663473384 is a `hidden beast` number, since 1 + 6 + 634 + 7 + 3 + 3 + 8 + 4 = 666.

It is a super-2 number, since 2×1663473384² = 5534287398552822912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1499422 + ... + 1500530.

It is an arithmetic number, because the mean of its divisors is an integer number (47727225).

Almost surely, 2^1663473384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663473384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2290906800).

1663473384 is an abundant number, since it is smaller than the sum of its proper divisors (2918340216).

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

1663473384 is a wasteful number, since it uses less digits than its factorization.

1663473384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1448 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 1663473384 is about 40785.7007295449. The cubic root of 1663473384 is about 1184.8734063344.

The spelling of 1663473384 in words is "one billion, six hundred sixty-three million, four hundred seventy-three thousand, three hundred eighty-four".