196145 has 4 divisors (see below), whose sum is σ = 235380. Its totient is φ = 156912.

The previous prime is 196139. The next prime is 196159. The reversal of 196145 is 541691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541691 = 29 ⋅18679.

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 43264 = 391^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 196145 - 2⁶ = 196081 is a prime.

It is a super-2 number, since 2×196145² = 76945722050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19610 + ... + 19619.

It is an arithmetic number, because the mean of its divisors is an integer number (58845).

2¹⁹⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

196145 is a deficient number, since it is larger than the sum of its proper divisors (39235).

196145 is an equidigital number, since it uses as much as digits as its factorization.

196145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39234.

The product of its digits is 1080, while the sum is 26.

The square root of 196145 is about 442.8826029548. The cubic root of 196145 is about 58.1021781913.

The spelling of 196145 in words is "one hundred ninety-six thousand, one hundred forty-five".