194978196 has 36 divisors (see below), whose sum is σ = 563271072. Its totient is φ = 55707984.

The previous prime is 194978131. The next prime is 194978237. The reversal of 194978196 is 691879491.

194978196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386610 + ... + 387113.

Almost surely, 2^194978196 is an apocalyptic number.

It is an amenable number.

194978196 is an abundant number, since it is smaller than the sum of its proper divisors (368292876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194978196 is a wasteful number, since it uses less digits than its factorization.

194978196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773740 (or 773735 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 194978196 is about 13963.4593135082. The cubic root of 194978196 is about 579.8673854554.

The spelling of 194978196 in words is "one hundred ninety-four million, nine hundred seventy-eight thousand, one hundred ninety-six".