18109076159 has 4 divisors (see below), whose sum is σ = 18110182440. Its totient is φ = 18107969880.

The previous prime is 18109076113. The next prime is 18109076231. The reversal of 18109076159 is 95167090181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95167090181 = 41 ⋅2321148541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18109076159 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 (18109576159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528212 + ... + 561449.

It is an arithmetic number, because the mean of its divisors is an integer number (4527545610).

Almost surely, 2^18109076159 is an apocalyptic number.

18109076159 is a deficient number, since it is larger than the sum of its proper divisors (1106281).

18109076159 is a wasteful number, since it uses less digits than its factorization.

18109076159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106280.

The product of its (nonzero) digits is 136080, while the sum is 47.

The spelling of 18109076159 in words is "eighteen billion, one hundred nine million, seventy-six thousand, one hundred fifty-nine".