1389175568 has 20 divisors (see below), whose sum is σ = 2936212368. Its totient is φ = 631443360.

The previous prime is 1389175561. The next prime is 1389175573. The reversal of 1389175568 is 8655719831.

It is not an unprimeable number, because it can be changed into a prime (1389175561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3946346 + ... + 3946697.

Almost surely, 2^1389175568 is an apocalyptic number.

It is an amenable number.

1389175568 is an abundant number, since it is smaller than the sum of its proper divisors (1547036800).

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

1389175568 is a wasteful number, since it uses less digits than its factorization.

1389175568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893062 (or 7893056 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 53.

The square root of 1389175568 is about 37271.6456304253. The cubic root of 1389175568 is about 1115.7983431665.

The spelling of 1389175568 in words is "one billion, three hundred eighty-nine million, one hundred seventy-five thousand, five hundred sixty-eight".