1381384784 has 40 divisors (see below), whose sum is σ = 3007640832. Its totient is φ = 609840000.

The previous prime is 1381384783. The next prime is 1381384789. The reversal of 1381384784 is 4874831831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381384783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139592 + ... + 149159.

Almost surely, 2^1381384784 is an apocalyptic number.

It is an amenable number.

1381384784 is an abundant number, since it is smaller than the sum of its proper divisors (1626256048).

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

1381384784 is a wasteful number, since it uses less digits than its factorization.

1381384784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288795 (or 288789 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 1381384784 is about 37166.9851346595. The cubic root of 1381384784 is about 1113.7085556429.

The spelling of 1381384784 in words is "one billion, three hundred eighty-one million, three hundred eighty-four thousand, seven hundred eighty-four".