678328486194 has 32 divisors (see below), whose sum is σ = 1419919017984. Its totient is φ = 215625223440.

The previous prime is 678328486193. The next prime is 678328486223. The reversal of 678328486194 is 491684823876.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (678328486193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7379434 + ... + 7470789.

It is an arithmetic number, because the mean of its divisors is an integer number (44372469312).

Almost surely, 2^678328486194 is an apocalyptic number.

678328486194 is an abundant number, since it is smaller than the sum of its proper divisors (741590531790).

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

678328486194 is a wasteful number, since it uses less digits than its factorization.

678328486194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850582.

The product of its digits is 111476736, while the sum is 66.

The spelling of 678328486194 in words is "six hundred seventy-eight billion, three hundred twenty-eight million, four hundred eighty-six thousand, one hundred ninety-four".