196851 has 4 divisors (see below), whose sum is σ = 262472. Its totient is φ = 131232.

The previous prime is 196837. The next prime is 196853. The reversal of 196851 is 158691.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-196851 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (196853) 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, 32806 + ... + 32811.

It is an arithmetic number, because the mean of its divisors is an integer number (65618).

2¹⁹⁶⁸⁵¹ is an apocalyptic number.

196851 is a deficient number, since it is larger than the sum of its proper divisors (65621).

196851 is an equidigital number, since it uses as much as digits as its factorization.

196851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65620.

The product of its digits is 2160, while the sum is 30.

The square root of 196851 is about 443.6789379720. The cubic root of 196851 is about 58.1718052874.

The spelling of 196851 in words is "one hundred ninety-six thousand, eight hundred fifty-one".