19842480709 has 8 divisors (see below), whose sum is σ = 20181208320. Its totient is φ = 19504186800.

The previous prime is 19842480703. The next prime is 19842480769. The reversal of 19842480709 is 90708424891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19842480709 - 2²¹ = 19840383557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19842480703) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15469 + ... + 199810.

It is an arithmetic number, because the mean of its divisors is an integer number (2522651040).

Almost surely, 2^19842480709 is an apocalyptic number.

It is an amenable number.

19842480709 is a deficient number, since it is larger than the sum of its proper divisors (338727611).

19842480709 is a wasteful number, since it uses less digits than its factorization.

19842480709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216851.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 19842480709 in words is "nineteen billion, eight hundred forty-two million, four hundred eighty thousand, seven hundred nine".