389194218 has 24 divisors (see below), whose sum is σ = 963719328. Its totient is φ = 111198312.

The previous prime is 389194207. The next prime is 389194219. The reversal of 389194218 is 812491983.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389194219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1544296 + ... + 1544547.

It is an arithmetic number, because the mean of its divisors is an integer number (40154972).

Almost surely, 2^389194218 is an apocalyptic number.

389194218 is an abundant number, since it is smaller than the sum of its proper divisors (574525110).

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

389194218 is a wasteful number, since it uses less digits than its factorization.

389194218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088858 (or 3088855 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 389194218 is about 19728.0059306560. The cubic root of 389194218 is about 730.1108344881.

The spelling of 389194218 in words is "three hundred eighty-nine million, one hundred ninety-four thousand, two hundred eighteen".