18514427 has 2 divisors, whose sum is σ = 18514428. Its totient is φ = 18514426.

The previous prime is 18514423. The next prime is 18514429. The reversal of 18514427 is 72441581.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18514427 - 2² = 18514423 is a prime.

Together with 18514429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18514393 and 18514402.

It is not a weakly prime, because it can be changed into another prime (18514423) 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 as a sum of consecutive naturals, namely, 9257213 + 9257214.

It is an arithmetic number, because the mean of its divisors is an integer number (9257214).

Almost surely, 2^18514427 is an apocalyptic number.

18514427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18514427 is an equidigital number, since it uses as much as digits as its factorization.

18514427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 18514427 is about 4302.8394113655. The cubic root of 18514427 is about 264.5473559171.

The spelling of 18514427 in words is "eighteen million, five hundred fourteen thousand, four hundred twenty-seven".