1378854585 has 12 divisors (see below), whose sum is σ = 2390014692. Its totient is φ = 735389088.

The previous prime is 1378854551. The next prime is 1378854629. The reversal of 1378854585 is 5854588731.

1378854585 is a `hidden beast` number, since 1 + 3 + 7 + 8 + 8 + 54 + 585 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 670602816 + 708251769 = 25896^2 + 26613^2 .

It is not a de Polignac number, because 1378854585 - 2¹³ = 1378846393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15320562 + ... + 15320651.

It is an arithmetic number, because the mean of its divisors is an integer number (199167891).

Almost surely, 2^1378854585 is an apocalyptic number.

1378854585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378854585 is a deficient number, since it is larger than the sum of its proper divisors (1011160107).

1378854585 is a wasteful number, since it uses less digits than its factorization.

1378854585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30641224 (or 30641221 counting only the distinct ones).

The product of its digits is 5376000, while the sum is 54.

The square root of 1378854585 is about 37132.9312740053. The cubic root of 1378854585 is about 1113.0281691880.

The spelling of 1378854585 in words is "one billion, three hundred seventy-eight million, eight hundred fifty-four thousand, five hundred eighty-five".