196942851840 has 144 divisors (see below), whose sum is σ = 718841507328. Its totient is φ = 45015502848.

The previous prime is 196942851779. The next prime is 196942851841. The reversal of 196942851840 is 48158249691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196942851841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3636492 + ... + 3690251.

It is an arithmetic number, because the mean of its divisors is an integer number (4991954912).

Almost surely, 2^196942851840 is an apocalyptic number.

196942851840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196942851840 is an abundant number, since it is smaller than the sum of its proper divisors (521898655488).

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

196942851840 is an equidigital number, since it uses as much as digits as its factorization.

196942851840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326774 (or 7326760 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 196942851840 in words is "one hundred ninety-six billion, nine hundred forty-two million, eight hundred fifty-one thousand, eight hundred forty".