196549943 has 4 divisors (see below), whose sum is σ = 196741248. Its totient is φ = 196358640.

The previous prime is 196549933. The next prime is 196549949. The reversal of 196549943 is 349945691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349945691 = 47 ⋅7445653.

It is a cyclic number.

It is not a de Polignac number, because 196549943 - 2⁶ = 196549879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196549891 and 196549900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196549949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94103 + ... + 96168.

It is an arithmetic number, because the mean of its divisors is an integer number (49185312).

Almost surely, 2^196549943 is an apocalyptic number.

196549943 is a deficient number, since it is larger than the sum of its proper divisors (191305).

196549943 is a wasteful number, since it uses less digits than its factorization.

196549943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191304.

The product of its digits is 1049760, while the sum is 50.

The square root of 196549943 is about 14019.6270635135. The cubic root of 196549943 is about 581.4213485192.

The spelling of 196549943 in words is "one hundred ninety-six million, five hundred forty-nine thousand, nine hundred forty-three".