19842666496 has 117 divisors (see below), whose sum is σ = 41587418919. Its totient is φ = 9466060800.

The previous prime is 19842666439. The next prime is 19842666497. The reversal of 19842666496 is 69466624891.

The square root of 19842666496 is 140864.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19842666497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 279474141 + ... + 279474211.

Almost surely, 2^19842666496 is an apocalyptic number.

19842666496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19842666496 is the 140864-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19842666496

19842666496 is an abundant number, since it is smaller than the sum of its proper divisors (21744752423).

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

19842666496 is an frugal number, since it uses more digits than its factorization.

19842666496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 104 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 61.

The spelling of 19842666496 in words is "nineteen billion, eight hundred forty-two million, six hundred sixty-six thousand, four hundred ninety-six".