18829431809 has 8 divisors (see below), whose sum is σ = 19269224832. Its totient is φ = 18389725200.

The previous prime is 18829431799. The next prime is 18829431811. The reversal of 18829431809 is 90813492881.

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 18829431809 - 2¹⁶ = 18829366273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18829431869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687512 + ... + 714374.

It is an arithmetic number, because the mean of its divisors is an integer number (2408653104).

Almost surely, 2^18829431809 is an apocalyptic number.

It is an amenable number.

18829431809 is a deficient number, since it is larger than the sum of its proper divisors (439793023).

18829431809 is a wasteful number, since it uses less digits than its factorization.

18829431809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43207.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 18829431809 in words is "eighteen billion, eight hundred twenty-nine million, four hundred thirty-one thousand, eight hundred nine".