197913 has 8 divisors (see below), whose sum is σ = 271168. Its totient is φ = 128304.

The previous prime is 197909. The next prime is 197921. The reversal of 197913 is 319791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197913 - 2² = 197909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (33896).

2¹⁹⁷⁹¹³ is an apocalyptic number.

It is an amenable number.

197913 is a deficient number, since it is larger than the sum of its proper divisors (73255).

197913 is a wasteful number, since it uses less digits than its factorization.

197913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 1701, while the sum is 30.

The square root of 197913 is about 444.8741395046. The cubic root of 197913 is about 58.2762289241.

The spelling of 197913 in words is "one hundred ninety-seven thousand, nine hundred thirteen".