197893 has 2 divisors, whose sum is σ = 197894. Its totient is φ = 197892.

The previous prime is 197891. The next prime is 197909. The reversal of 197893 is 398791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187489 + 10404 = 433^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 197893 - 2¹ = 197891 is a prime.

Together with 197891, it forms a pair of twin primes.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98946 + 98947.

It is an arithmetic number, because the mean of its divisors is an integer number (98947).

2¹⁹⁷⁸⁹³ is an apocalyptic number.

It is an amenable number.

197893 is a deficient number, since it is larger than the sum of its proper divisors (1).

197893 is an equidigital number, since it uses as much as digits as its factorization.

197893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 197893 is about 444.8516606690. The cubic root of 197893 is about 58.2742658329.

The spelling of 197893 in words is "one hundred ninety-seven thousand, eight hundred ninety-three".