18852105287 has 2 divisors, whose sum is σ = 18852105288. Its totient is φ = 18852105286.

The previous prime is 18852105277. The next prime is 18852105289. The reversal of 18852105287 is 78250125881.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78250125881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18852105287 - 2¹⁶ = 18852039751 is a prime.

Together with 18852105289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18852105289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9426052643 + 9426052644.

It is an arithmetic number, because the mean of its divisors is an integer number (9426052644).

Almost surely, 2^18852105287 is an apocalyptic number.

18852105287 is a deficient number, since it is larger than the sum of its proper divisors (1).

18852105287 is an equidigital number, since it uses as much as digits as its factorization.

18852105287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 358400, while the sum is 47.

The spelling of 18852105287 in words is "eighteen billion, eight hundred fifty-two million, one hundred five thousand, two hundred eighty-seven".