18842847009 has 8 divisors (see below), whose sum is σ = 28712909760. Its totient is φ = 10767341136.

The previous prime is 18842846983. The next prime is 18842847011. The reversal of 18842847009 is 90074824881.

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

It is not a de Polignac number, because 18842847009 - 2⁸ = 18842846753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18842847059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448639194 + ... + 448639235.

It is an arithmetic number, because the mean of its divisors is an integer number (3589113720).

Almost surely, 2^18842847009 is an apocalyptic number.

It is an amenable number.

18842847009 is a deficient number, since it is larger than the sum of its proper divisors (9870062751).

18842847009 is an equidigital number, since it uses as much as digits as its factorization.

18842847009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897278439.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 18842847009 in words is "eighteen billion, eight hundred forty-two million, eight hundred forty-seven thousand, nine".