2100193 has 2 divisors, whose sum is σ = 2100194.
Its totient is φ = 2100192.
The previous prime is 2100191. The next prime is 2100221. The reversal of 2100193 is 3910012.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 2039184 + 61009 = 1428^2 + 247^2
It is a cyclic number.
It is not a de Polignac number, because 2100193 - 21 = 2100191 is a prime.
Together with 2100191, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (2100191) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050096 + 1050097.
It is an arithmetic number, because the mean of its divisors is an integer number (1050097).
22100193 is an apocalyptic number.
It is an amenable number.
2100193 is a deficient number, since it is larger than the sum of its proper divisors (1).
2100193 is an equidigital number, since it uses as much as digits as its factorization.
2100193 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 54, while the sum is 16.
The square root of 2100193 is about 1449.2042644155.
The cubic root of 2100193 is about 128.0618394227.
The spelling of 2100193 in words is "two million, one hundred thousand, one hundred ninety-three".