196918 has 4 divisors (see below), whose sum is σ = 295380. Its totient is φ = 98458.

The previous prime is 196907. The next prime is 196919. The reversal of 196918 is 819691.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196919) 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 as a sum of consecutive naturals, namely, 49228 + ... + 49231.

It is an arithmetic number, because the mean of its divisors is an integer number (73845).

2¹⁹⁶⁹¹⁸ is an apocalyptic number.

196918 is a deficient number, since it is larger than the sum of its proper divisors (98462).

196918 is an equidigital number, since it uses as much as digits as its factorization.

196918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98461.

The product of its digits is 3888, while the sum is 34.

The square root of 196918 is about 443.7544365975. The cubic root of 196918 is about 58.1784043037.

The spelling of 196918 in words is "one hundred ninety-six thousand, nine hundred eighteen".