196857820852 has 36 divisors (see below), whose sum is σ = 437177762784. Its totient is φ = 76697851440.

The previous prime is 196857820823. The next prime is 196857820853. The reversal of 196857820852 is 258028758691.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196857820853) by changing a digit.

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, 45651328 + ... + 45655639.

It is an arithmetic number, because the mean of its divisors is an integer number (12143826744).

Almost surely, 2^196857820852 is an apocalyptic number.

It is an amenable number.

196857820852 is an abundant number, since it is smaller than the sum of its proper divisors (240319941932).

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

196857820852 is a wasteful number, since it uses less digits than its factorization.

196857820852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91306996 (or 91306987 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 61.

The spelling of 196857820852 in words is "one hundred ninety-six billion, eight hundred fifty-seven million, eight hundred twenty thousand, eight hundred fifty-two".