18810163 has 2 divisors, whose sum is σ = 18810164. Its totient is φ = 18810162.

The previous prime is 18810119. The next prime is 18810179. The reversal of 18810163 is 36101881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18810163 is a prime.

It is not a weakly prime, because it can be changed into another prime (18810263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9405081 + 9405082.

It is an arithmetic number, because the mean of its divisors is an integer number (9405082).

Almost surely, 2^18810163 is an apocalyptic number.

18810163 is a deficient number, since it is larger than the sum of its proper divisors (1).

18810163 is an equidigital number, since it uses as much as digits as its factorization.

18810163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18810163 is about 4337.0684799758. The cubic root of 18810163 is about 265.9484843799.

The spelling of 18810163 in words is "eighteen million, eight hundred ten thousand, one hundred sixty-three".