18868063 has 2 divisors, whose sum is σ = 18868064. Its totient is φ = 18868062.

The previous prime is 18868049. The next prime is 18868081. The reversal of 18868063 is 36086881.

It is a weak prime.

It is an emirp because it is prime and its reverse (36086881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18868063 - 2¹³ = 18859871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18868043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9434031 + 9434032.

It is an arithmetic number, because the mean of its divisors is an integer number (9434032).

Almost surely, 2^18868063 is an apocalyptic number.

18868063 is a deficient number, since it is larger than the sum of its proper divisors (1).

18868063 is an equidigital number, since it uses as much as digits as its factorization.

18868063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 18868063 is about 4343.7383668909. The cubic root of 18868063 is about 266.2210789484.

The spelling of 18868063 in words is "eighteen million, eight hundred sixty-eight thousand, sixty-three".