19684074496 has 44 divisors (see below), whose sum is σ = 40091469372. Its totient is φ = 9656311808.

The previous prime is 19684074467. The next prime is 19684074497. The reversal of 19684074496 is 69447048691.

It can be written as a sum of positive squares in 2 ways, for example, as 17891737600 + 1792336896 = 133760^2 + 42336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19684074496.

It is not an unprimeable number, because it can be changed into a prime (19684074497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127075 + ... + 235618.

Almost surely, 2^19684074496 is an apocalyptic number.

19684074496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19684074496 is an abundant number, since it is smaller than the sum of its proper divisors (20407394876).

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

19684074496 is an equidigital number, since it uses as much as digits as its factorization.

19684074496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362766 (or 362748 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 19684074496 in words is "nineteen billion, six hundred eighty-four million, seventy-four thousand, four hundred ninety-six".