1389828125 has 56 divisors (see below), whose sum is σ = 2021224128. Its totient is φ = 936000000.

The previous prime is 1389828091. The next prime is 1389828221. The reversal of 1389828125 is 5218289831.

It is not a de Polignac number, because 1389828125 - 2¹⁶ = 1389762589 is a prime.

Its product of digits (276480) is a multiple of the sum of its prime divisors (240).

It is a self number, because there is not a number n which added to its sum of digits gives 1389828125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 10609310 + ... + 10609440.

It is an arithmetic number, because the mean of its divisors is an integer number (36093288).

Almost surely, 2^1389828125 is an apocalyptic number.

It is an amenable number.

1389828125 is a deficient number, since it is larger than the sum of its proper divisors (631396003).

1389828125 is an frugal number, since it uses more digits than its factorization.

1389828125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 240 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 1389828125 is about 37280.3986700786. The cubic root of 1389828125 is about 1115.9730290390.

The spelling of 1389828125 in words is "one billion, three hundred eighty-nine million, eight hundred twenty-eight thousand, one hundred twenty-five".