18018434929 has 16 divisors (see below), whose sum is σ = 20820084480. Its totient is φ = 15411400960.

The previous prime is 18018434923. The next prime is 18018434971. The reversal of 18018434929 is 92943481081.

It is a cyclic number.

It is not a de Polignac number, because 18018434929 - 2⁵ = 18018434897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18018434923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567807 + ... + 598699.

It is an arithmetic number, because the mean of its divisors is an integer number (1301255280).

Almost surely, 2^18018434929 is an apocalyptic number.

It is an amenable number.

18018434929 is a deficient number, since it is larger than the sum of its proper divisors (2801649551).

18018434929 is a wasteful number, since it uses less digits than its factorization.

18018434929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 18018434929 in words is "eighteen billion, eighteen million, four hundred thirty-four thousand, nine hundred twenty-nine".