19884327628 has 24 divisors (see below), whose sum is σ = 37994886720. Its totient is φ = 9030259920.

The previous prime is 19884327607. The next prime is 19884327637. The reversal of 19884327628 is 82672348891.

It is a happy number.

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, 151798 + ... + 250621.

It is an arithmetic number, because the mean of its divisors is an integer number (1583120280).

Almost surely, 2^19884327628 is an apocalyptic number.

It is an amenable number.

19884327628 is a deficient number, since it is larger than the sum of its proper divisors (18110559092).

19884327628 is a wasteful number, since it uses less digits than its factorization.

19884327628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403557 (or 403555 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 58.

The spelling of 19884327628 in words is "nineteen billion, eight hundred eighty-four million, three hundred twenty-seven thousand, six hundred twenty-eight".