1389018234 has 8 divisors (see below), whose sum is σ = 2778036480. Its totient is φ = 463006076.

The previous prime is 1389018233. The next prime is 1389018247. The reversal of 1389018234 is 4328109831.

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

1389018234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1389018192 and 1389018201.

It is not an unprimeable number, because it can be changed into a prime (1389018233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115751514 + ... + 115751525.

It is an arithmetic number, because the mean of its divisors is an integer number (347254560).

Almost surely, 2^1389018234 is an apocalyptic number.

1389018234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1389018234 is a wasteful number, since it uses less digits than its factorization.

1389018234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231503044.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1389018234 is about 37269.5349313618. The cubic root of 1389018234 is about 1115.7562175469.

The spelling of 1389018234 in words is "one billion, three hundred eighty-nine million, eighteen thousand, two hundred thirty-four".