194978195 has 8 divisors (see below), whose sum is σ = 234325536. Its totient is φ = 155748096.

The previous prime is 194978131. The next prime is 194978237. The reversal of 194978195 is 591879491.

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

It is a cyclic number.

It is not a de Polignac number, because 194978195 - 2⁶ = 194978131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25607 + ... + 32336.

It is an arithmetic number, because the mean of its divisors is an integer number (29290692).

Almost surely, 2^194978195 is an apocalyptic number.

194978195 is a deficient number, since it is larger than the sum of its proper divisors (39347341).

194978195 is an equidigital number, since it uses as much as digits as its factorization.

194978195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58621.

The product of its digits is 816480, while the sum is 53.

The square root of 194978195 is about 13963.4592777005. The cubic root of 194978195 is about 579.8673844641.

The spelling of 194978195 in words is "one hundred ninety-four million, nine hundred seventy-eight thousand, one hundred ninety-five".