18754427 has 2 divisors, whose sum is σ = 18754428. Its totient is φ = 18754426.

The previous prime is 18754423. The next prime is 18754433. The reversal of 18754427 is 72445781.

It is a weak prime.

It is an emirp because it is prime and its reverse (72445781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18754427 - 2² = 18754423 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18754423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377213 + 9377214.

It is an arithmetic number, because the mean of its divisors is an integer number (9377214).

Almost surely, 2^18754427 is an apocalyptic number.

18754427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18754427 is an equidigital number, since it uses as much as digits as its factorization.

18754427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 38.

The square root of 18754427 is about 4330.6381746805. The cubic root of 18754427 is about 265.6855490480.

The spelling of 18754427 in words is "eighteen million, seven hundred fifty-four thousand, four hundred twenty-seven".