19809473350 has 48 divisors (see below), whose sum is σ = 38486599200. Its totient is φ = 7571590400.

The previous prime is 19809473347. The next prime is 19809473393. The reversal of 19809473350 is 5337490891.

It is a junction number, because it is equal to n+sod(n) for n = 19809473294 and 19809473303.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1198140 + ... + 1214560.

It is an arithmetic number, because the mean of its divisors is an integer number (801804150).

Almost surely, 2^19809473350 is an apocalyptic number.

19809473350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19809473350 is a deficient number, since it is larger than the sum of its proper divisors (18677125850).

19809473350 is a wasteful number, since it uses less digits than its factorization.

19809473350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17505 (or 17500 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 19809473350 in words is "nineteen billion, eight hundred nine million, four hundred seventy-three thousand, three hundred fifty".