194689601 has 4 divisors (see below), whose sum is σ = 194900100. Its totient is φ = 194479104.

The previous prime is 194689591. The next prime is 194689619. The reversal of 194689601 is 106986491.

194689601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 192543376 = 1465^2 + 13876^2 .

It is a cyclic number.

It is not a de Polignac number, because 194689601 - 2¹⁰ = 194688577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194689631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103856 + ... + 105713.

It is an arithmetic number, because the mean of its divisors is an integer number (48725025).

Almost surely, 2^194689601 is an apocalyptic number.

It is an amenable number.

194689601 is a deficient number, since it is larger than the sum of its proper divisors (210499).

194689601 is an equidigital number, since it uses as much as digits as its factorization.

194689601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210498.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 194689601 is about 13953.1215503915. The cubic root of 194689601 is about 579.5811492419.

The spelling of 194689601 in words is "one hundred ninety-four million, six hundred eighty-nine thousand, six hundred one".