389318530 has 32 divisors (see below), whose sum is σ = 743062896. Its totient is φ = 146356224.

The previous prime is 389318509. The next prime is 389318543. The reversal of 389318530 is 35813983.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 292512609 + 96805921 = 17103^2 + 9839^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168342 + ... + 170638.

Almost surely, 2^389318530 is an apocalyptic number.

389318530 is a deficient number, since it is larger than the sum of its proper divisors (353744366).

389318530 is a wasteful number, since it uses less digits than its factorization.

389318530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 389318530 is about 19731.1563269870. The cubic root of 389318530 is about 730.1885607853.

The spelling of 389318530 in words is "three hundred eighty-nine million, three hundred eighteen thousand, five hundred thirty".