194955566 has 8 divisors (see below), whose sum is σ = 314928264. Its totient is φ = 89979480.

The previous prime is 194955557. The next prime is 194955581. The reversal of 194955566 is 665559491.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749120 + ... + 3749171.

It is an arithmetic number, because the mean of its divisors is an integer number (39366033).

Almost surely, 2^194955566 is an apocalyptic number.

194955566 is a deficient number, since it is larger than the sum of its proper divisors (119972698).

194955566 is a wasteful number, since it uses less digits than its factorization.

194955566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498306.

The product of its digits is 1458000, while the sum is 50.

The square root of 194955566 is about 13962.6489607094. The cubic root of 194955566 is about 579.8449506278.

The spelling of 194955566 in words is "one hundred ninety-four million, nine hundred fifty-five thousand, five hundred sixty-six".