197903 has 4 divisors (see below), whose sum is σ = 200688. Its totient is φ = 195120.

The previous prime is 197893. The next prime is 197909. The reversal of 197903 is 309791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309791 = 17 ⋅18223.

It is a cyclic number.

It is not a de Polignac number, because 197903 - 2⁴ = 197887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (50172).

2¹⁹⁷⁹⁰³ is an apocalyptic number.

197903 is a deficient number, since it is larger than the sum of its proper divisors (2785).

197903 is an equidigital number, since it uses as much as digits as its factorization.

197903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 197903 is about 444.8629002288. The cubic root of 197903 is about 58.2752473950.

The spelling of 197903 in words is "one hundred ninety-seven thousand, nine hundred three".