1380823956 has 24 divisors (see below), whose sum is σ = 3579914240. Its totient is φ = 460274616.

The previous prime is 1380823943. The next prime is 1380823967. The reversal of 1380823956 is 6593280831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6392596 + ... + 6392811.

Almost surely, 2^1380823956 is an apocalyptic number.

It is an amenable number.

1380823956 is an abundant number, since it is smaller than the sum of its proper divisors (2199090284).

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

1380823956 is a wasteful number, since it uses less digits than its factorization.

1380823956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785420 (or 12785412 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1380823956 is about 37159.4396620832. The cubic root of 1380823956 is about 1113.5578171726.

The spelling of 1380823956 in words is "one billion, three hundred eighty million, eight hundred twenty-three thousand, nine hundred fifty-six".