1380067816 has 16 divisors (see below), whose sum is σ = 2588026500. Its totient is φ = 689927424.

The previous prime is 1380067811. The next prime is 1380067823. The reversal of 1380067816 is 6187600831.

It can be written as a sum of positive squares in 2 ways, for example, as 1353504100 + 26563716 = 36790^2 + 5154^2 .

It is not an unprimeable number, because it can be changed into a prime (1380067811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81456 + ... + 96928.

Almost surely, 2^1380067816 is an apocalyptic number.

It is an amenable number.

1380067816 is a deficient number, since it is larger than the sum of its proper divisors (1207958684).

1380067816 is a wasteful number, since it uses less digits than its factorization.

1380067816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26628 (or 26624 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1380067816 is about 37149.2640034766. The cubic root of 1380067816 is about 1113.3545184235.

The spelling of 1380067816 in words is "one billion, three hundred eighty million, sixty-seven thousand, eight hundred sixteen".