18130193 has 2 divisors, whose sum is σ = 18130194. Its totient is φ = 18130192.

The previous prime is 18130153. The next prime is 18130213. The reversal of 18130193 is 39103181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15147664 + 2982529 = 3892^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 18130193 - 2⁶ = 18130129 is a prime.

It is not a weakly prime, because it can be changed into another prime (18130103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9065096 + 9065097.

It is an arithmetic number, because the mean of its divisors is an integer number (9065097).

Almost surely, 2^18130193 is an apocalyptic number.

It is an amenable number.

18130193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18130193 is an equidigital number, since it uses as much as digits as its factorization.

18130193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 18130193 is about 4257.9564347231. The cubic root of 18130193 is about 262.7044780170.

The spelling of 18130193 in words is "eighteen million, one hundred thirty thousand, one hundred ninety-three".