194163644 has 12 divisors (see below), whose sum is σ = 341872104. Its totient is φ = 96485904.

The previous prime is 194163611. The next prime is 194163691. The reversal of 194163644 is 446361491.

It is a junction number, because it is equal to n+sod(n) for n = 194163598 and 194163607.

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, 148247 + ... + 149550.

It is an arithmetic number, because the mean of its divisors is an integer number (28489342).

Almost surely, 2^194163644 is an apocalyptic number.

It is an amenable number.

194163644 is a deficient number, since it is larger than the sum of its proper divisors (147708460).

194163644 is a wasteful number, since it uses less digits than its factorization.

194163644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297964 (or 297962 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 194163644 is about 13934.2615161335. The cubic root of 194163644 is about 579.0587627029.

The spelling of 194163644 in words is "one hundred ninety-four million, one hundred sixty-three thousand, six hundred forty-four".