19743003136 has 80 divisors (see below), whose sum is σ = 39949246656. Its totient is φ = 9746599936.

The previous prime is 19743003103. The next prime is 19743003149. The reversal of 19743003136 is 63130034791.

It is a junction number, because it is equal to n+sod(n) for n = 19743003095 and 19743003104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30514365 + ... + 30515011.

Almost surely, 2^19743003136 is an apocalyptic number.

19743003136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19743003136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19974623328).

19743003136 is an abundant number, since it is smaller than the sum of its proper divisors (20206243520).

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

19743003136 is an equidigital number, since it uses as much as digits as its factorization.

19743003136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 19743003136 in words is "nineteen billion, seven hundred forty-three million, three thousand, one hundred thirty-six".