18029113 has 4 divisors (see below), whose sum is σ = 18087028. Its totient is φ = 17971200.

The previous prime is 18029111. The next prime is 18029117. The reversal of 18029113 is 31192081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 8369449 = 3108^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 18029113 - 2¹ = 18029111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18029111) 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 3 ways as a sum of consecutive naturals, for example, 28488 + ... + 29113.

It is an arithmetic number, because the mean of its divisors is an integer number (4521757).

Almost surely, 2^18029113 is an apocalyptic number.

It is an amenable number.

18029113 is a deficient number, since it is larger than the sum of its proper divisors (57915).

18029113 is an equidigital number, since it uses as much as digits as its factorization.

18029113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57914.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 18029113 is about 4246.0703008782. The cubic root of 18029113 is about 262.2153552483.

The spelling of 18029113 in words is "eighteen million, twenty-nine thousand, one hundred thirteen".