389165018 has 8 divisors (see below), whose sum is σ = 636815520. Its totient is φ = 176893180.

The previous prime is 389165017. The next prime is 389165027. The reversal of 389165018 is 810561983.

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

It is a super-2 number, since 2×389165018² = 302898822469880648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389165017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8844638 + ... + 8844681.

It is an arithmetic number, because the mean of its divisors is an integer number (79601940).

Almost surely, 2^389165018 is an apocalyptic number.

389165018 is a deficient number, since it is larger than the sum of its proper divisors (247650502).

389165018 is a wasteful number, since it uses less digits than its factorization.

389165018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17689332.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 389165018 is about 19727.2658521144. The cubic root of 389165018 is about 730.0925747362.

It can be divided in two parts, 38916 and 5018, that added together give a palindrome (43934).

The spelling of 389165018 in words is "three hundred eighty-nine million, one hundred sixty-five thousand, eighteen".