19969031500 has 48 divisors (see below), whose sum is σ = 47577138336. Its totient is φ = 7261464000.

The previous prime is 19969031443. The next prime is 19969031507. The reversal of 19969031500 is 513096991.

It is not an unprimeable number, because it can be changed into a prime (19969031507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809867 + ... + 1820866.

It is an arithmetic number, because the mean of its divisors is an integer number (991190382).

Almost surely, 2^19969031500 is an apocalyptic number.

19969031500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19969031500 is an abundant number, since it is smaller than the sum of its proper divisors (27608106836).

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

19969031500 is a wasteful number, since it uses less digits than its factorization.

19969031500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630763 (or 3630751 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 43.

The spelling of 19969031500 in words is "nineteen billion, nine hundred sixty-nine million, thirty-one thousand, five hundred".