196873978 has 16 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 84288816.

The previous prime is 196873967. The next prime is 196873981. The reversal of 196873978 is 879378691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8268 + ... + 21496.

It is an arithmetic number, because the mean of its divisors is an integer number (21115080).

Almost surely, 2^196873978 is an apocalyptic number.

196873978 is a deficient number, since it is larger than the sum of its proper divisors (140967302).

196873978 is a wasteful number, since it uses less digits than its factorization.

196873978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14301.

The product of its digits is 4572288, while the sum is 58.

The square root of 196873978 is about 14031.1787815565. The cubic root of 196873978 is about 581.7406862323.

The spelling of 196873978 in words is "one hundred ninety-six million, eight hundred seventy-three thousand, nine hundred seventy-eight".