18683201 has 2 divisors, whose sum is σ = 18683202. Its totient is φ = 18683200.

The previous prime is 18683191. The next prime is 18683207. The reversal of 18683201 is 10238681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14622976 + 4060225 = 3824^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 18683201 - 2¹⁸ = 18421057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18683207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9341600 + 9341601.

It is an arithmetic number, because the mean of its divisors is an integer number (9341601).

Almost surely, 2^18683201 is an apocalyptic number.

It is an amenable number.

18683201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18683201 is an equidigital number, since it uses as much as digits as its factorization.

18683201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18683201 is about 4322.4068526690. The cubic root of 18683201 is about 265.3487801009.

The spelling of 18683201 in words is "eighteen million, six hundred eighty-three thousand, two hundred one".