194225911 has 4 divisors (see below), whose sum is σ = 211882824. Its totient is φ = 176569000.

The previous prime is 194225909. The next prime is 194225921. The reversal of 194225911 is 119522491.

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

It is a cyclic number.

It is not a de Polignac number, because 194225911 - 2¹ = 194225909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194225921) 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, 8828440 + ... + 8828461.

It is an arithmetic number, because the mean of its divisors is an integer number (52970706).

Almost surely, 2^194225911 is an apocalyptic number.

194225911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194225911 is a deficient number, since it is larger than the sum of its proper divisors (17656913).

194225911 is a wasteful number, since it uses less digits than its factorization.

194225911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17656912.

The product of its digits is 6480, while the sum is 34.

The square root of 194225911 is about 13936.4956499114. The cubic root of 194225911 is about 579.1206561957.

The spelling of 194225911 in words is "one hundred ninety-four million, two hundred twenty-five thousand, nine hundred eleven".