1389178384 has 40 divisors (see below), whose sum is σ = 2938338720. Its totient is φ = 630988800.

The previous prime is 1389178381. The next prime is 1389178429. The reversal of 1389178384 is 4838719831.

It is not an unprimeable number, because it can be changed into a prime (1389178381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415632 + ... + 418960.

It is an arithmetic number, because the mean of its divisors is an integer number (73458468).

Almost surely, 2^1389178384 is an apocalyptic number.

It is an amenable number.

1389178384 is an abundant number, since it is smaller than the sum of its proper divisors (1549160336).

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

1389178384 is a wasteful number, since it uses less digits than its factorization.

1389178384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719 (or 5713 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 1389178384 is about 37271.6834071122. The cubic root of 1389178384 is about 1115.7990971115.

The spelling of 1389178384 in words is "one billion, three hundred eighty-nine million, one hundred seventy-eight thousand, three hundred eighty-four".