194740221 has 24 divisors (see below), whose sum is σ = 284021856. Its totient is φ = 118622400.

The previous prime is 194740199. The next prime is 194740229. The reversal of 194740221 is 122047491.

It is not a de Polignac number, because 194740221 - 2⁷ = 194740093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194740229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49306 + ... + 53108.

It is an arithmetic number, because the mean of its divisors is an integer number (11834244).

Almost surely, 2^194740221 is an apocalyptic number.

It is an amenable number.

194740221 is a deficient number, since it is larger than the sum of its proper divisors (89281635).

194740221 is a wasteful number, since it uses less digits than its factorization.

194740221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 194740221 is about 13954.9353635192. The cubic root of 194740221 is about 579.6313759537.

The spelling of 194740221 in words is "one hundred ninety-four million, seven hundred forty thousand, two hundred twenty-one".