196381 has 4 divisors (see below), whose sum is σ = 200992. Its totient is φ = 191772.

The previous prime is 196379. The next prime is 196387. The reversal of 196381 is 183691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 196381 - 2¹ = 196379 is a prime.

It is a super-2 number, since 2×196381² = 77130994322, which contains 22 as substring.

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 (196387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (50248).

2¹⁹⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

196381 is a deficient number, since it is larger than the sum of its proper divisors (4611).

196381 is an equidigital number, since it uses as much as digits as its factorization.

196381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4610.

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

The square root of 196381 is about 443.1489591548. The cubic root of 196381 is about 58.1254715343.

It can be divided in two parts, 19 and 6381, that added together give a square (6400 = 80²).

The spelling of 196381 in words is "one hundred ninety-six thousand, three hundred eighty-one".