18852971 has 2 divisors, whose sum is σ = 18852972. Its totient is φ = 18852970.

The previous prime is 18852947. The next prime is 18853013. The reversal of 18852971 is 17925881.

It is a weak prime.

It is an emirp because it is prime and its reverse (17925881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18852971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18852901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9426485 + 9426486.

It is an arithmetic number, because the mean of its divisors is an integer number (9426486).

Almost surely, 2^18852971 is an apocalyptic number.

18852971 is a deficient number, since it is larger than the sum of its proper divisors (1).

18852971 is an equidigital number, since it uses as much as digits as its factorization.

18852971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 41.

The square root of 18852971 is about 4342.0008060801. Note that the first 3 decimals coincide. The cubic root of 18852971 is about 266.1500792519.

The spelling of 18852971 in words is "eighteen million, eight hundred fifty-two thousand, nine hundred seventy-one".