196505973 has 16 divisors (see below), whose sum is σ = 292237440. Its totient is φ = 130501152.

The previous prime is 196505971. The next prime is 196505977. The reversal of 196505973 is 379505691.

196505973 is a `hidden beast` number, since 1 + 9 + 6 + 50 + 597 + 3 = 666.

It is not a de Polignac number, because 196505973 - 2¹ = 196505971 is a prime.

It is a super-2 number, since 2×196505973² = 77229194849353458, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196505971) 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 15 ways as a sum of consecutive naturals, for example, 6736 + ... + 20937.

It is an arithmetic number, because the mean of its divisors is an integer number (18264840).

Almost surely, 2^196505973 is an apocalyptic number.

It is an amenable number.

196505973 is a deficient number, since it is larger than the sum of its proper divisors (95731467).

196505973 is a wasteful number, since it uses less digits than its factorization.

196505973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27945 (or 27939 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The square root of 196505973 is about 14018.0588171116. The cubic root of 196505973 is about 581.3779888809.

The spelling of 196505973 in words is "one hundred ninety-six million, five hundred five thousand, nine hundred seventy-three".