196343257 has 8 divisors (see below), whose sum is σ = 214310880. Its totient is φ = 178395360.

The previous prime is 196343239. The next prime is 196343267. The reversal of 196343257 is 752343691.

It is a happy number.

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

It is not a de Polignac number, because 196343257 - 2¹⁹ = 195818969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196343227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22594 + ... + 30052.

It is an arithmetic number, because the mean of its divisors is an integer number (26788860).

Almost surely, 2^196343257 is an apocalyptic number.

It is an amenable number.

196343257 is a deficient number, since it is larger than the sum of its proper divisors (17967623).

196343257 is a wasteful number, since it uses less digits than its factorization.

196343257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863.

The product of its digits is 136080, while the sum is 40.

The square root of 196343257 is about 14012.2538158570. The cubic root of 196343257 is about 581.2174753142.

The spelling of 196343257 in words is "one hundred ninety-six million, three hundred forty-three thousand, two hundred fifty-seven".