196819534836 has 36 divisors (see below), whose sum is σ = 498992385892. Its totient is φ = 65411829504.

The previous prime is 196819534787. The next prime is 196819534937. The reversal of 196819534836 is 638435918691.

196819534836 is a `hidden beast` number, since 1 + 9 + 6 + 8 + 19 + 534 + 83 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31967294436 + 164852240400 = 178794^2 + 406020^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8099455 + ... + 8123718.

Almost surely, 2^196819534836 is an apocalyptic number.

It is an amenable number.

196819534836 is an abundant number, since it is smaller than the sum of its proper divisors (302172851056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196819534836 is a wasteful number, since it uses less digits than its factorization.

196819534836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16223520 (or 16223515 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 196819534836 in words is "one hundred ninety-six billion, eight hundred nineteen million, five hundred thirty-four thousand, eight hundred thirty-six".