18143029 has 16 divisors (see below), whose sum is σ = 20044800. Its totient is φ = 16346880.

The previous prime is 18143023. The next prime is 18143039. The reversal of 18143029 is 92034181.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18143029 - 2¹¹ = 18140981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18142988 and 18143006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18143023) 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 15 ways as a sum of consecutive naturals, for example, 91072 + ... + 91270.

It is an arithmetic number, because the mean of its divisors is an integer number (1252800).

Almost surely, 2^18143029 is an apocalyptic number.

It is an amenable number.

18143029 is a deficient number, since it is larger than the sum of its proper divisors (1901771).

18143029 is a wasteful number, since it uses less digits than its factorization.

18143029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18143029 is about 4259.4634638649. The cubic root of 18143029 is about 262.7664607952.

The spelling of 18143029 in words is "eighteen million, one hundred forty-three thousand, twenty-nine".