194942312 has 8 divisors (see below), whose sum is σ = 365516850. Its totient is φ = 97471152.

The previous prime is 194942311. The next prime is 194942389. The reversal of 194942312 is 213249491.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 47416996 = 12146^2 + 6886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (194942311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12183887 + ... + 12183902.

Almost surely, 2^194942312 is an apocalyptic number.

It is an amenable number.

194942312 is a deficient number, since it is larger than the sum of its proper divisors (170574538).

194942312 is a wasteful number, since it uses less digits than its factorization.

194942312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24367795 (or 24367791 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 194942312 is about 13962.1743292368. The cubic root of 194942312 is about 579.8318101307.

The spelling of 194942312 in words is "one hundred ninety-four million, nine hundred forty-two thousand, three hundred twelve".