18027019 has 8 divisors (see below), whose sum is σ = 18672192. Its totient is φ = 17392200.

The previous prime is 18027013. The next prime is 18027043. The reversal of 18027019 is 91072081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18027019 - 2³ = 18027011 is a prime.

It is a super-2 number, since 2×18027019² = 649946828052722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18027011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044 + ... + 6094.

It is an arithmetic number, because the mean of its divisors is an integer number (2334024).

Almost surely, 2^18027019 is an apocalyptic number.

18027019 is a deficient number, since it is larger than the sum of its proper divisors (645173).

18027019 is an equidigital number, since it uses as much as digits as its factorization.

18027019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 18027019 is about 4245.8237127794. The cubic root of 18027019 is about 262.2052031458.

The spelling of 18027019 in words is "eighteen million, twenty-seven thousand, nineteen".