194538036 has 144 divisors (see below), whose sum is σ = 606735360. Its totient is φ = 47839680.

The previous prime is 194538031. The next prime is 194538049. The reversal of 194538036 is 630835491.

It is a junction number, because it is equal to n+sod(n) for n = 194537985 and 194538003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194538031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122101 + ... + 123683.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^194538036 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 194538036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303367680).

194538036 is an abundant number, since it is smaller than the sum of its proper divisors (412197324).

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

194538036 is a wasteful number, since it uses less digits than its factorization.

194538036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 194538036 is about 13947.6892709868. The cubic root of 194538036 is about 579.4307097359.

The spelling of 194538036 in words is "one hundred ninety-four million, five hundred thirty-eight thousand, thirty-six".