18030029 has 4 divisors (see below), whose sum is σ = 18449376. Its totient is φ = 17610684.

The previous prime is 18029971. The next prime is 18030041. The reversal of 18030029 is 92003081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92003081 = 1459 ⋅63059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18030029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18029986 and 18030013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18030059) 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 3 ways as a sum of consecutive naturals, for example, 209609 + ... + 209694.

It is an arithmetic number, because the mean of its divisors is an integer number (4612344).

Almost surely, 2^18030029 is an apocalyptic number.

It is an amenable number.

18030029 is a deficient number, since it is larger than the sum of its proper divisors (419347).

18030029 is an equidigital number, since it uses as much as digits as its factorization.

18030029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419346.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 18030029 is about 4246.1781639493. The cubic root of 18030029 is about 262.2197959400.

The spelling of 18030029 in words is "eighteen million, thirty thousand, twenty-nine".