19838903012 has 6 divisors (see below), whose sum is σ = 34718080278. Its totient is φ = 9919451504.

The previous prime is 19838903011. The next prime is 19838903033. The reversal of 19838903012 is 21030983891.

It can be written as a sum of positive squares in only one way, i.e., 14348685796 + 5490217216 = 119786^2 + 74096^2 .

It is not an unprimeable number, because it can be changed into a prime (19838903011) 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 as a sum of consecutive naturals, namely, 2479862873 + ... + 2479862880.

It is an arithmetic number, because the mean of its divisors is an integer number (5786346713).

Almost surely, 2^19838903012 is an apocalyptic number.

It is an amenable number.

19838903012 is a deficient number, since it is larger than the sum of its proper divisors (14879177266).

19838903012 is a wasteful number, since it uses less digits than its factorization.

19838903012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959725757 (or 4959725755 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 19838903012 in words is "nineteen billion, eight hundred thirty-eight million, nine hundred three thousand, twelve".