1389132938 has 8 divisors (see below), whose sum is σ = 2084801220. Its totient is φ = 694199200.

The previous prime is 1389132929. The next prime is 1389133027. The reversal of 1389132938 is 8392319831.

It can be written as a sum of positive squares in 2 ways, for example, as 1319360329 + 69772609 = 36323^2 + 8353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1389132892 and 1389132901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178883 + ... + 186486.

Almost surely, 2^1389132938 is an apocalyptic number.

1389132938 is a deficient number, since it is larger than the sum of its proper divisors (695668282).

1389132938 is a wasteful number, since it uses less digits than its factorization.

1389132938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367272.

The product of its digits is 279936, while the sum is 47.

The square root of 1389132938 is about 37271.0737435883. The cubic root of 1389132938 is about 1115.7869294496.

The spelling of 1389132938 in words is "one billion, three hundred eighty-nine million, one hundred thirty-two thousand, nine hundred thirty-eight".