196813 has 4 divisors (see below), whose sum is σ = 198940. Its totient is φ = 194688.

The previous prime is 196799. The next prime is 196817. The reversal of 196813 is 318691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 39204 = 397^2 + 198^2 .

It is a cyclic number.

It is not a de Polignac number, because 196813 - 2¹³ = 188621 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196817) 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 3 ways as a sum of consecutive naturals, for example, 918 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (49735).

2¹⁹⁶⁸¹³ is an apocalyptic number.

It is an amenable number.

196813 is a deficient number, since it is larger than the sum of its proper divisors (2127).

196813 is an equidigital number, since it uses as much as digits as its factorization.

196813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its digits is 1296, while the sum is 28.

The square root of 196813 is about 443.6361121460. The cubic root of 196813 is about 58.1680618963.

The spelling of 196813 in words is "one hundred ninety-six thousand, eight hundred thirteen".