1389943152 has 100 divisors (see below), whose sum is σ = 4332405000. Its totient is φ = 427669632.

The previous prime is 1389943129. The next prime is 1389943183. The reversal of 1389943152 is 2513499831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1389943098 and 1389943107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24402 + ... + 58097.

It is an arithmetic number, because the mean of its divisors is an integer number (43324050).

Almost surely, 2^1389943152 is an apocalyptic number.

1389943152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1389943152 is an abundant number, since it is smaller than the sum of its proper divisors (2942461848).

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

1389943152 is a wasteful number, since it uses less digits than its factorization.

1389943152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82532 (or 82517 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1389943152 is about 37281.9413657604. The cubic root of 1389943152 is about 1116.0038154570.

The spelling of 1389943152 in words is "one billion, three hundred eighty-nine million, nine hundred forty-three thousand, one hundred fifty-two".