196543853 has 4 divisors (see below), whose sum is σ = 214411488. Its totient is φ = 178676220.

The previous prime is 196543849. The next prime is 196543859. The reversal of 196543853 is 358345691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358345691 = 11 ⋅32576881.

It is a cyclic number.

It is not a de Polignac number, because 196543853 - 2² = 196543849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196543859) 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, 8933801 + ... + 8933822.

It is an arithmetic number, because the mean of its divisors is an integer number (53602872).

Almost surely, 2^196543853 is an apocalyptic number.

It is an amenable number.

196543853 is a deficient number, since it is larger than the sum of its proper divisors (17867635).

196543853 is a wasteful number, since it uses less digits than its factorization.

196543853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17867634.

The product of its digits is 388800, while the sum is 44.

The square root of 196543853 is about 14019.4098663246. The cubic root of 196543853 is about 581.4153434422.

The spelling of 196543853 in words is "one hundred ninety-six million, five hundred forty-three thousand, eight hundred fifty-three".