196238391804 has 864 divisors, whose sum is σ = 681424773120. Its totient is φ = 46426079232.

The previous prime is 196238391761. The next prime is 196238391827. The reversal of 196238391804 is 408193832691.

196238391804 is a `hidden beast` number, since 1 + 9 + 623 + 8 + 3 + 9 + 1 + 8 + 0 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2484030237 + ... + 2484030315.

It is an arithmetic number, because the mean of its divisors is an integer number (788686080).

Almost surely, 2^196238391804 is an apocalyptic number.

196238391804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196238391804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340712386560).

196238391804 is an abundant number, since it is smaller than the sum of its proper divisors (485186381316).

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

196238391804 is a wasteful number, since it uses less digits than its factorization.

196238391804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 196238391804 in words is "one hundred ninety-six billion, two hundred thirty-eight million, three hundred ninety-one thousand, eight hundred four".