1378044560 has 20 divisors (see below), whose sum is σ = 3203953788. Its totient is φ = 551217792.

The previous prime is 1378044557. The next prime is 1378044571. The reversal of 1378044560 is 654408731.

It can be written as a sum of positive squares in 2 ways, for example, as 771506176 + 606538384 = 27776^2 + 24628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8612699 + ... + 8612858.

Almost surely, 2^1378044560 is an apocalyptic number.

1378044560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378044560 is an abundant number, since it is smaller than the sum of its proper divisors (1825909228).

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

1378044560 is a wasteful number, since it uses less digits than its factorization.

1378044560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17225570 (or 17225564 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1378044560 is about 37122.0225742079. The cubic root of 1378044560 is about 1112.8101724878.

The spelling of 1378044560 in words is "one billion, three hundred seventy-eight million, forty-four thousand, five hundred sixty".