194331128901 has 32 divisors (see below), whose sum is σ = 327521365248. Its totient is φ = 99733939200.

The previous prime is 194331128899. The next prime is 194331128923. The reversal of 194331128901 is 109821133491.

194331128901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194331128901 - 2¹ = 194331128899 is a prime.

It is a super-3 number, since 3×194331128901³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194331128941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9609300 + ... + 9629501.

It is an arithmetic number, because the mean of its divisors is an integer number (10235042664).

Almost surely, 2^194331128901 is an apocalyptic number.

It is an amenable number.

194331128901 is a deficient number, since it is larger than the sum of its proper divisors (133190236347).

194331128901 is a wasteful number, since it uses less digits than its factorization.

194331128901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19238861.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 194331128901 in words is "one hundred ninety-four billion, three hundred thirty-one million, one hundred twenty-eight thousand, nine hundred one".