389240618 has 16 divisors (see below), whose sum is σ = 636352416. Its totient is φ = 177484080.

The previous prime is 389240609. The next prime is 389240623. The reversal of 389240618 is 816042983.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88028 + ... + 92343.

It is an arithmetic number, because the mean of its divisors is an integer number (39772026).

Almost surely, 2^389240618 is an apocalyptic number.

389240618 is a deficient number, since it is larger than the sum of its proper divisors (247111798).

389240618 is a wasteful number, since it uses less digits than its factorization.

389240618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180469.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 389240618 is about 19729.1818887657. The cubic root of 389240618 is about 730.1398481056.

The spelling of 389240618 in words is "three hundred eighty-nine million, two hundred forty thousand, six hundred eighteen".