18100193 has 2 divisors, whose sum is σ = 18100194. Its totient is φ = 18100192.

The previous prime is 18100177. The next prime is 18100207. The reversal of 18100193 is 39100181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 652864 = 4177^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 18100193 - 2⁴ = 18100177 is a prime.

It is not a weakly prime, because it can be changed into another prime (18100493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9050096 + 9050097.

It is an arithmetic number, because the mean of its divisors is an integer number (9050097).

Almost surely, 2^18100193 is an apocalyptic number.

It is an amenable number.

18100193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18100193 is an equidigital number, since it uses as much as digits as its factorization.

18100193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 18100193 is about 4254.4321595249. The cubic root of 18100193 is about 262.5594991355.

The spelling of 18100193 in words is "eighteen million, one hundred thousand, one hundred ninety-three".