194128412 has 12 divisors (see below), whose sum is σ = 340267536. Its totient is φ = 96909120.

The previous prime is 194128397. The next prime is 194128421. The reversal of 194128412 is 214821491.

It is a happy number.

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, 35933 + ... + 40980.

It is an arithmetic number, because the mean of its divisors is an integer number (28355628).

Almost surely, 2^194128412 is an apocalyptic number.

It is an amenable number.

194128412 is a deficient number, since it is larger than the sum of its proper divisors (146139124).

194128412 is a wasteful number, since it uses less digits than its factorization.

194128412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77548 (or 77546 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 194128412 is about 13932.9972367757. The cubic root of 194128412 is about 579.0237361792.

The spelling of 194128412 in words is "one hundred ninety-four million, one hundred twenty-eight thousand, four hundred twelve".