18104809269 has 4 divisors (see below), whose sum is σ = 24139745696. Its totient is φ = 12069872844.

The previous prime is 18104809267. The next prime is 18104809273. The reversal of 18104809269 is 96290840181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96290840181 = 3 ⋅32096946727.

It is not a de Polignac number, because 18104809269 - 2¹ = 18104809267 is a prime.

It is a super-2 number, since 2×18104809269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104809267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017468209 + ... + 3017468214.

It is an arithmetic number, because the mean of its divisors is an integer number (6034936424).

Almost surely, 2^18104809269 is an apocalyptic number.

It is an amenable number.

18104809269 is a deficient number, since it is larger than the sum of its proper divisors (6034936427).

18104809269 is an equidigital number, since it uses as much as digits as its factorization.

18104809269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6034936426.

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 18104809269 in words is "eighteen billion, one hundred four million, eight hundred nine thousand, two hundred sixty-nine".