19663667330 has 16 divisors (see below), whose sum is σ = 35396472960. Its totient is φ = 7865050992.

The previous prime is 19663667329. The next prime is 19663667333. The reversal of 19663667330 is 3376636691.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19663667333) by changing a digit.

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, 208901 + ... + 288039.

It is an arithmetic number, because the mean of its divisors is an integer number (2212279560).

Almost surely, 2^19663667330 is an apocalyptic number.

19663667330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19663667330 is a deficient number, since it is larger than the sum of its proper divisors (15732805630).

19663667330 is a wasteful number, since it uses less digits than its factorization.

19663667330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103993.

The product of its (nonzero) digits is 2204496, while the sum is 50.

The spelling of 19663667330 in words is "nineteen billion, six hundred sixty-three million, six hundred sixty-seven thousand, three hundred thirty".