196154205804 has 72 divisors (see below), whose sum is σ = 504515466000. Its totient is φ = 64241178624.

The previous prime is 196154205787. The next prime is 196154205829. The reversal of 196154205804 is 408502451691.

196154205804 is a `hidden beast` number, since 1 + 9 + 61 + 5 + 4 + 2 + 0 + 580 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 196154205804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3987792 + ... + 4036680.

It is an arithmetic number, because the mean of its divisors is an integer number (7007159250).

Almost surely, 2^196154205804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196154205804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252257733000).

196154205804 is an abundant number, since it is smaller than the sum of its proper divisors (308361260196).

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

196154205804 is a wasteful number, since it uses less digits than its factorization.

196154205804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50847 (or 50842 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 196154205804 in words is "one hundred ninety-six billion, one hundred fifty-four million, two hundred five thousand, eight hundred four".