18013027 has 4 divisors (see below), whose sum is σ = 18241120. Its totient is φ = 17784936.

The previous prime is 18013003. The next prime is 18013049. The reversal of 18013027 is 72031081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72031081 = 53 ⋅1359077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18013027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18012989 and 18013007.

It is not an unprimeable number, because it can be changed into a prime (18113027) 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, 113928 + ... + 114085.

It is an arithmetic number, because the mean of its divisors is an integer number (4560280).

Almost surely, 2^18013027 is an apocalyptic number.

18013027 is a deficient number, since it is larger than the sum of its proper divisors (228093).

18013027 is an equidigital number, since it uses as much as digits as its factorization.

18013027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228092.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 18013027 is about 4244.1756561198. The cubic root of 18013027 is about 262.1373471346.

The spelling of 18013027 in words is "eighteen million, thirteen thousand, twenty-seven".