1380440578 has 16 divisors (see below), whose sum is σ = 2268362880. Its totient is φ = 624845200.

The previous prime is 1380440569. The next prime is 1380440591. The reversal of 1380440578 is 8750440831.

It is a self number, because there is not a number n which added to its sum of digits gives 1380440578.

It is an unprimeable number.

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, 126013 + ... + 136528.

It is an arithmetic number, because the mean of its divisors is an integer number (141772680).

Almost surely, 2^1380440578 is an apocalyptic number.

1380440578 is a deficient number, since it is larger than the sum of its proper divisors (887922302).

1380440578 is a wasteful number, since it uses less digits than its factorization.

1380440578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262793.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 1380440578 is about 37154.2807493295. The cubic root of 1380440578 is about 1113.4547499464.

The spelling of 1380440578 in words is "one billion, three hundred eighty million, four hundred forty thousand, five hundred seventy-eight".