194661814901 has 8 divisors (see below), whose sum is σ = 204940236000. Its totient is φ = 184386700080.

The previous prime is 194661814891. The next prime is 194661814909. The reversal of 194661814901 is 109418166491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194661814901 - 2¹⁰ = 194661813877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194661814901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194661814909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705251 + ... + 941648.

It is an arithmetic number, because the mean of its divisors is an integer number (25617529500).

Almost surely, 2^194661814901 is an apocalyptic number.

It is an amenable number.

194661814901 is a deficient number, since it is larger than the sum of its proper divisors (10278421099).

194661814901 is a wasteful number, since it uses less digits than its factorization.

194661814901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653139.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 194661814901 in words is "one hundred ninety-four billion, six hundred sixty-one million, eight hundred fourteen thousand, nine hundred one".