18828371 has 2 divisors, whose sum is σ = 18828372. Its totient is φ = 18828370.

The previous prime is 18828361. The next prime is 18828391. The reversal of 18828371 is 17382881.

It is a weak prime.

It is an emirp because it is prime and its reverse (17382881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18828371 - 2¹⁴ = 18811987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18828361) 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, 9414185 + 9414186.

It is an arithmetic number, because the mean of its divisors is an integer number (9414186).

Almost surely, 2^18828371 is an apocalyptic number.

18828371 is a deficient number, since it is larger than the sum of its proper divisors (1).

18828371 is an equidigital number, since it uses as much as digits as its factorization.

18828371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 38.

The square root of 18828371 is about 4339.1670859740. The cubic root of 18828371 is about 266.0342682969.

The spelling of 18828371 in words is "eighteen million, eight hundred twenty-eight thousand, three hundred seventy-one".