194227661 has 8 divisors (see below), whose sum is σ = 195686400. Its totient is φ = 192773520.

The previous prime is 194227651. The next prime is 194227687. The reversal of 194227661 is 166722491.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194227661 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 (194227651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151220 + ... + 152498.

It is an arithmetic number, because the mean of its divisors is an integer number (24460800).

Almost surely, 2^194227661 is an apocalyptic number.

It is an amenable number.

194227661 is a deficient number, since it is larger than the sum of its proper divisors (1458739).

194227661 is a wasteful number, since it uses less digits than its factorization.

194227661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its digits is 36288, while the sum is 38.

The square root of 194227661 is about 13936.5584345634. The cubic root of 194227661 is about 579.1223955073.

The spelling of 194227661 in words is "one hundred ninety-four million, two hundred twenty-seven thousand, six hundred sixty-one".