19988231230 has 64 divisors (see below), whose sum is σ = 41351627520. Its totient is φ = 6879859200.

The previous prime is 19988231209. The next prime is 19988231239. The reversal of 19988231230 is 3213288991.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19988231239) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2840977 + ... + 2848003.

It is an arithmetic number, because the mean of its divisors is an integer number (646119180).

Almost surely, 2^19988231230 is an apocalyptic number.

19988231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19988231230 is an abundant number, since it is smaller than the sum of its proper divisors (21363396290).

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

19988231230 is a wasteful number, since it uses less digits than its factorization.

19988231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 19988231230 in words is "nineteen billion, nine hundred eighty-eight million, two hundred thirty-one thousand, two hundred thirty".