1378605216 has 96 divisors (see below), whose sum is σ = 3761856000. Its totient is φ = 441584640.

The previous prime is 1378605203. The next prime is 1378605229. The reversal of 1378605216 is 6125068731.

It is an interprime number because it is at equal distance from previous prime (1378605203) and next prime (1378605229).

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 441870 + ... + 444978.

It is an arithmetic number, because the mean of its divisors is an integer number (39186000).

Almost surely, 2^1378605216 is an apocalyptic number.

1378605216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378605216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880928000).

1378605216 is an abundant number, since it is smaller than the sum of its proper divisors (2383250784).

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

1378605216 is a wasteful number, since it uses less digits than its factorization.

1378605216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302 (or 3294 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1378605216 is about 37129.5733344729. The cubic root of 1378605216 is about 1112.9610672474.

The spelling of 1378605216 in words is "one billion, three hundred seventy-eight million, six hundred five thousand, two hundred sixteen".