196813555 has 4 divisors (see below), whose sum is σ = 236176272. Its totient is φ = 157450840.

The previous prime is 196813541. The next prime is 196813577. The reversal of 196813555 is 555318691.

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

It is not a de Polignac number, because 196813555 - 2⁵ = 196813523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 19681351 + ... + 19681360.

It is an arithmetic number, because the mean of its divisors is an integer number (59044068).

Almost surely, 2^196813555 is an apocalyptic number.

196813555 is a deficient number, since it is larger than the sum of its proper divisors (39362717).

196813555 is an equidigital number, since it uses as much as digits as its factorization.

196813555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39362716.

The product of its digits is 162000, while the sum is 43.

The square root of 196813555 is about 14029.0254472647. The cubic root of 196813555 is about 581.6811657301.

The spelling of 196813555 in words is "one hundred ninety-six million, eight hundred thirteen thousand, five hundred fifty-five".