196931478 has 8 divisors (see below), whose sum is σ = 393862968. Its totient is φ = 65643824.

The previous prime is 196931477. The next prime is 196931503. The reversal of 196931478 is 874139691.

It is a happy number.

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

196931478 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196931477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16410951 + ... + 16410962.

It is an arithmetic number, because the mean of its divisors is an integer number (49232871).

Almost surely, 2^196931478 is an apocalyptic number.

196931478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

196931478 is a wasteful number, since it uses less digits than its factorization.

196931478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32821918.

The product of its digits is 326592, while the sum is 48.

The square root of 196931478 is about 14033.2276401404. The cubic root of 196931478 is about 581.7973160856.

The spelling of 196931478 in words is "one hundred ninety-six million, nine hundred thirty-one thousand, four hundred seventy-eight".