194121436236 has 144 divisors (see below), whose sum is σ = 567789997824. Its totient is φ = 51164555904.

The previous prime is 194121436199. The next prime is 194121436349. The reversal of 194121436236 is 632634121491.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13622131 + ... + 13636373.

It is an arithmetic number, because the mean of its divisors is an integer number (3942986096).

Almost surely, 2^194121436236 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 194121436236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283894998912).

194121436236 is an abundant number, since it is smaller than the sum of its proper divisors (373668561588).

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

194121436236 is a wasteful number, since it uses less digits than its factorization.

194121436236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16060 (or 16051 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The spelling of 194121436236 in words is "one hundred ninety-four billion, one hundred twenty-one million, four hundred thirty-six thousand, two hundred thirty-six".