1380821804 has 12 divisors (see below), whose sum is σ = 2558581704. Its totient is φ = 649798464.

The previous prime is 1380821801. The next prime is 1380821867. The reversal of 1380821804 is 4081280831.

It is not an unprimeable number, because it can be changed into a prime (1380821801) 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, 10153034 + ... + 10153169.

It is an arithmetic number, because the mean of its divisors is an integer number (213215142).

Almost surely, 2^1380821804 is an apocalyptic number.

It is an amenable number.

1380821804 is a deficient number, since it is larger than the sum of its proper divisors (1177759900).

1380821804 is a wasteful number, since it uses less digits than its factorization.

1380821804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20306224 (or 20306222 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 1380821804 is about 37159.4107057687. The cubic root of 1380821804 is about 1113.5572386828.

The spelling of 1380821804 in words is "one billion, three hundred eighty million, eight hundred twenty-one thousand, eight hundred four".