1663488582 has 64 divisors (see below), whose sum is σ = 3932995584. Its totient is φ = 459004320.

The previous prime is 1663488571. The next prime is 1663488611. The reversal of 1663488582 is 2858843661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 836193 + ... + 838179.

It is an arithmetic number, because the mean of its divisors is an integer number (61453056).

Almost surely, 2^1663488582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663488582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966497792).

1663488582 is an abundant number, since it is smaller than the sum of its proper divisors (2269507002).

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

1663488582 is a wasteful number, since it uses less digits than its factorization.

1663488582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673.

The product of its digits is 2211840, while the sum is 51.

The square root of 1663488582 is about 40785.8870444177. The cubic root of 1663488582 is about 1184.8770147783.

The spelling of 1663488582 in words is "one billion, six hundred sixty-three million, four hundred eighty-eight thousand, five hundred eighty-two".