394685190718 has 16 divisors (see below), whose sum is σ = 728649583200. Its totient is φ = 156139196256.

The previous prime is 394685190671. The next prime is 394685190719. The reversal of 394685190718 is 817091586493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394685190719) 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 7 ways as a sum of consecutive naturals, for example, 1084299793 + ... + 1084300156.

It is an arithmetic number, because the mean of its divisors is an integer number (45540598950).

Almost surely, 2^394685190718 is an apocalyptic number.

394685190718 is a deficient number, since it is larger than the sum of its proper divisors (333964392482).

394685190718 is a wasteful number, since it uses less digits than its factorization.

394685190718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168599971.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 394685190718 in words is "three hundred ninety-four billion, six hundred eighty-five million, one hundred ninety thousand, seven hundred eighteen".