19888955148 has 24 divisors (see below), whose sum is σ = 46867045680. Its totient is φ = 6564011200.

The previous prime is 19888955137. The next prime is 19888955171. The reversal of 19888955148 is 84155988891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8203803 + ... + 8206226.

It is an arithmetic number, because the mean of its divisors is an integer number (1952793570).

Almost surely, 2^19888955148 is an apocalyptic number.

It is an amenable number.

19888955148 is an abundant number, since it is smaller than the sum of its proper divisors (26978090532).

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

19888955148 is a wasteful number, since it uses less digits than its factorization.

19888955148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410137 (or 16410135 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 66.

The spelling of 19888955148 in words is "nineteen billion, eight hundred eighty-eight million, nine hundred fifty-five thousand, one hundred forty-eight".