18880163 has 2 divisors, whose sum is σ = 18880164. Its totient is φ = 18880162.

The previous prime is 18880157. The next prime is 18880207. The reversal of 18880163 is 36108881.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36108881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18880163 - 2⁸ = 18879907 is a prime.

It is not a weakly prime, because it can be changed into another prime (18882163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9440081 + 9440082.

It is an arithmetic number, because the mean of its divisors is an integer number (9440082).

Almost surely, 2^18880163 is an apocalyptic number.

18880163 is a deficient number, since it is larger than the sum of its proper divisors (1).

18880163 is an equidigital number, since it uses as much as digits as its factorization.

18880163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18880163 is about 4345.1309531474. The cubic root of 18880163 is about 266.2779755626.

The spelling of 18880163 in words is "eighteen million, eight hundred eighty thousand, one hundred sixty-three".