1378688336 has 20 divisors (see below), whose sum is σ = 2811799200. Its totient is φ = 653062752.

The previous prime is 1378688323. The next prime is 1378688347. The reversal of 1378688336 is 6338868731.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2267276 + ... + 2267883.

It is an arithmetic number, because the mean of its divisors is an integer number (140589960).

Almost surely, 2^1378688336 is an apocalyptic number.

1378688336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1378688336 is an abundant number, since it is smaller than the sum of its proper divisors (1433110864).

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

1378688336 is a wasteful number, since it uses less digits than its factorization.

1378688336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535186 (or 4535180 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 1378688336 is about 37130.6926409945. The cubic root of 1378688336 is about 1112.9834346527.

The spelling of 1378688336 in words is "one billion, three hundred seventy-eight million, six hundred eighty-eight thousand, three hundred thirty-six".