18034508817 has 80 divisors (see below), whose sum is σ = 30371658240. Its totient is φ = 10581487488.

The previous prime is 18034508801. The next prime is 18034508839. The reversal of 18034508817 is 71880543081.

It is a happy number.

18034508817 is a `hidden beast` number, since 180 + 3 + 450 + 8 + 8 + 17 = 666.

It is not a de Polignac number, because 18034508817 - 2⁴ = 18034508801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18034508017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8887359 + ... + 8889387.

It is an arithmetic number, because the mean of its divisors is an integer number (379645728).

Almost surely, 2^18034508817 is an apocalyptic number.

It is an amenable number.

18034508817 is a deficient number, since it is larger than the sum of its proper divisors (12337149423).

18034508817 is a wasteful number, since it uses less digits than its factorization.

18034508817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

It can be divided in two parts, 18034 and 508817, that added together give a triangular number (526851 = T₁₀₂₆).

The spelling of 18034508817 in words is "eighteen billion, thirty-four million, five hundred eight thousand, eight hundred seventeen".