196115209 has 8 divisors (see below), whose sum is σ = 198907520. Its totient is φ = 193330800.

The previous prime is 196115189. The next prime is 196115219. The reversal of 196115209 is 902511691.

It is a happy number.

196115209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196115209 is a prime.

It is a super-2 number, since 2×196115209² = 76922350402227362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196115219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62539 + ... + 65599.

It is an arithmetic number, because the mean of its divisors is an integer number (24863440).

Almost surely, 2^196115209 is an apocalyptic number.

It is an amenable number.

196115209 is a deficient number, since it is larger than the sum of its proper divisors (2792311).

196115209 is an equidigital number, since it uses as much as digits as its factorization.

196115209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951.

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 196115209 is about 14004.1140026779. The cubic root of 196115209 is about 580.9923647364.

The spelling of 196115209 in words is "one hundred ninety-six million, one hundred fifteen thousand, two hundred nine".