18142022729 has 8 divisors (see below), whose sum is σ = 18322362240. Its totient is φ = 17961764256.

The previous prime is 18142022671. The next prime is 18142022747. The reversal of 18142022729 is 92722024181.

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 18142022729 - 2²⁴ = 18125245513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18142022692 and 18142022701.

It is not an unprimeable number, because it can be changed into a prime (18142022779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494084 + ... + 529530.

It is an arithmetic number, because the mean of its divisors is an integer number (2290295280).

Almost surely, 2^18142022729 is an apocalyptic number.

It is an amenable number.

18142022729 is a deficient number, since it is larger than the sum of its proper divisors (180339511).

18142022729 is a wasteful number, since it uses less digits than its factorization.

18142022729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40519.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 18142022729 in words is "eighteen billion, one hundred forty-two million, twenty-two thousand, seven hundred twenty-nine".