1663004652 has 48 divisors (see below), whose sum is σ = 4044902400. Its totient is φ = 531119680.

The previous prime is 1663004633. The next prime is 1663004653. The reversal of 1663004652 is 2564003661.

It is a super-2 number, since 2×1663004652² = 5531168945147282208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663004653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27349 + ... + 63827.

It is an arithmetic number, because the mean of its divisors is an integer number (84268800).

Almost surely, 2^1663004652 is an apocalyptic number.

1663004652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663004652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022451200).

1663004652 is an abundant number, since it is smaller than the sum of its proper divisors (2381897748).

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

1663004652 is a wasteful number, since it uses less digits than its factorization.

1663004652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36646 (or 36644 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1663004652 is about 40779.9540460751. The cubic root of 1663004652 is about 1184.7621050334.

Subtracting 1663004652 from its reverse (2564003661), we obtain a palindrome (900999009).

The spelling of 1663004652 in words is "one billion, six hundred sixty-three million, four thousand, six hundred fifty-two".