196918147 has 4 divisors (see below), whose sum is σ = 207282280. Its totient is φ = 186554016.

The previous prime is 196918129. The next prime is 196918151. The reversal of 196918147 is 741819691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741819691 = 2011 ⋅368881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196918147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196918097 and 196918106.

It is not an unprimeable number, because it can be changed into a prime (196918747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5182038 + ... + 5182075.

It is an arithmetic number, because the mean of its divisors is an integer number (51820570).

Almost surely, 2^196918147 is an apocalyptic number.

196918147 is a deficient number, since it is larger than the sum of its proper divisors (10364133).

196918147 is a wasteful number, since it uses less digits than its factorization.

196918147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10364132.

The product of its digits is 108864, while the sum is 46.

The square root of 196918147 is about 14032.7526522775. The cubic root of 196918147 is about 581.7841878051.

The spelling of 196918147 in words is "one hundred ninety-six million, nine hundred eighteen thousand, one hundred forty-seven".