18459289729 has 16 divisors (see below), whose sum is σ = 19381579776. Its totient is φ = 17558600400.

The previous prime is 18459289679. The next prime is 18459289753. The reversal of 18459289729 is 92798295481.

It is a cyclic number.

It is not a de Polignac number, because 18459289729 - 2¹¹ = 18459287681 is a prime.

It is a super-3 number, since 3×18459289729³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18459289769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960444 + ... + 979474.

It is an arithmetic number, because the mean of its divisors is an integer number (1211348736).

Almost surely, 2^18459289729 is an apocalyptic number.

It is an amenable number.

18459289729 is a deficient number, since it is larger than the sum of its proper divisors (922290047).

18459289729 is a wasteful number, since it uses less digits than its factorization.

18459289729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19596.

The product of its digits is 26127360, while the sum is 64.

The spelling of 18459289729 in words is "eighteen billion, four hundred fifty-nine million, two hundred eighty-nine thousand, seven hundred twenty-nine".