18104619609 has 8 divisors (see below), whose sum is σ = 26821658720. Its totient is φ = 12069746388.

The previous prime is 18104619571. The next prime is 18104619613. The reversal of 18104619609 is 90691640181.

18104619609 is a `hidden beast` number, since 18 + 10 + 4 + 6 + 19 + 609 = 666.

It is not a de Polignac number, because 18104619609 - 2¹² = 18104615513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18104619619) 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, 335270707 + ... + 335270760.

It is an arithmetic number, because the mean of its divisors is an integer number (3352707340).

Almost surely, 2^18104619609 is an apocalyptic number.

It is an amenable number.

18104619609 is a deficient number, since it is larger than the sum of its proper divisors (8717039111).

18104619609 is an equidigital number, since it uses as much as digits as its factorization.

18104619609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670541476 (or 670541470 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 18104619609 in words is "eighteen billion, one hundred four million, six hundred nineteen thousand, six hundred nine".