196850009 has 4 divisors (see below), whose sum is σ = 198171300. Its totient is φ = 195528720.

The previous prime is 196849997. The next prime is 196850023. The reversal of 196850009 is 900058691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11971600 + 184878409 = 3460^2 + 13597^2 .

It is a cyclic number.

It is not a de Polignac number, because 196850009 - 2¹⁶ = 196784473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196850039) 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, 660422 + ... + 660719.

It is an arithmetic number, because the mean of its divisors is an integer number (49542825).

Almost surely, 2^196850009 is an apocalyptic number.

It is an amenable number.

196850009 is a deficient number, since it is larger than the sum of its proper divisors (1321291).

196850009 is a wasteful number, since it uses less digits than its factorization.

196850009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321290.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 196850009 is about 14030.3246220463. The cubic root of 196850009 is about 581.7170766987.

The spelling of 196850009 in words is "one hundred ninety-six million, eight hundred fifty thousand, nine".