209198050093 has 2 divisors, whose sum is σ = 209198050094. Its totient is φ = 209198050092.

The previous prime is 209198050043. The next prime is 209198050133. The reversal of 209198050093 is 390050891902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202300249284 + 6897800809 = 449778^2 + 83053^2 .

It is a cyclic number.

It is not a de Polignac number, because 209198050093 - 2¹³ = 209198041901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209198050003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104599025046 + 104599025047.

It is an arithmetic number, because the mean of its divisors is an integer number (104599025047).

Almost surely, 2^209198050093 is an apocalyptic number.

It is an amenable number.

209198050093 is a deficient number, since it is larger than the sum of its proper divisors (1).

209198050093 is an equidigital number, since it uses as much as digits as its factorization.

209198050093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 209198050093 in words is "two hundred nine billion, one hundred ninety-eight million, fifty thousand, ninety-three".