196651409 has 8 divisors (see below), whose sum is σ = 197676000. Its totient is φ = 195630336.

The previous prime is 196651397. The next prime is 196651447. The reversal of 196651409 is 904156691.

196651409 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 not a de Polignac number, because 196651409 - 2²⁴ = 179874193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196651489) 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, 287582 + ... + 288264.

It is an arithmetic number, because the mean of its divisors is an integer number (24709500).

Almost surely, 2^196651409 is an apocalyptic number.

It is an amenable number.

196651409 is a deficient number, since it is larger than the sum of its proper divisors (1024591).

196651409 is an equidigital number, since it uses as much as digits as its factorization.

196651409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 196651409 is about 14023.2453091287. The cubic root of 196651409 is about 581.5213813639.

The spelling of 196651409 in words is "one hundred ninety-six million, six hundred fifty-one thousand, four hundred nine".