1663025330 has 16 divisors (see below), whose sum is σ = 3044183040. Its totient is φ = 653935152.

The previous prime is 1663025321. The next prime is 1663025417. The reversal of 1663025330 is 335203661.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1663025293 and 1663025302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408754 + ... + 1409933.

It is an arithmetic number, because the mean of its divisors is an integer number (190261440).

Almost surely, 2^1663025330 is an apocalyptic number.

1663025330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663025330 is a deficient number, since it is larger than the sum of its proper divisors (1381157710).

1663025330 is a wasteful number, since it uses less digits than its factorization.

1663025330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818753.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 1663025330 is about 40780.2075767154. The cubic root of 1663025330 is about 1184.7670155046.

Adding to 1663025330 its reverse (335203661), we get a palindrome (1998228991).

The spelling of 1663025330 in words is "one billion, six hundred sixty-three million, twenty-five thousand, three hundred thirty".