18034429 has 16 divisors (see below), whose sum is σ = 21340800. Its totient is φ = 14917824.

The previous prime is 18034427. The next prime is 18034441. The reversal of 18034429 is 92443081.

It is a cyclic number.

It is not a de Polignac number, because 18034429 - 2¹ = 18034427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18034429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18034421) 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, 46167 + ... + 46555.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^18034429 is an apocalyptic number.

It is an amenable number.

18034429 is a deficient number, since it is larger than the sum of its proper divisors (3306371).

18034429 is a wasteful number, since it uses less digits than its factorization.

18034429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18034429 is about 4246.6962453182. The cubic root of 18034429 is about 262.2411246774.

The spelling of 18034429 in words is "eighteen million, thirty-four thousand, four hundred twenty-nine".