18814193 has 2 divisors, whose sum is σ = 18814194. Its totient is φ = 18814192.

The previous prime is 18814183. The next prime is 18814247. The reversal of 18814193 is 39141881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18809569 + 4624 = 4337^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 18814193 - 2²⁴ = 2036977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18814183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9407096 + 9407097.

It is an arithmetic number, because the mean of its divisors is an integer number (9407097).

Almost surely, 2^18814193 is an apocalyptic number.

It is an amenable number.

18814193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18814193 is an equidigital number, since it uses as much as digits as its factorization.

18814193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 18814193 is about 4337.5330546291. The cubic root of 18814193 is about 265.9674758131.

The spelling of 18814193 in words is "eighteen million, eight hundred fourteen thousand, one hundred ninety-three".