18808027 has 4 divisors (see below), whose sum is σ = 21494896. Its totient is φ = 16121160.

The previous prime is 18808021. The next prime is 18808033. The reversal of 18808027 is 72080881.

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

It is an interprime number because it is at equal distance from previous prime (18808021) and next prime (18808033).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18808027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18807983 and 18808001.

It is not an unprimeable number, because it can be changed into a prime (18808021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343424 + ... + 1343437.

It is an arithmetic number, because the mean of its divisors is an integer number (5373724).

Almost surely, 2^18808027 is an apocalyptic number.

18808027 is a deficient number, since it is larger than the sum of its proper divisors (2686869).

18808027 is an equidigital number, since it uses as much as digits as its factorization.

18808027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686868.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 18808027 is about 4336.8222237025. The cubic root of 18808027 is about 265.9384173492.

The spelling of 18808027 in words is "eighteen million, eight hundred eight thousand, twenty-seven".