1378828680 has 64 divisors (see below), whose sum is σ = 4248296640. Its totient is φ = 357748992.

The previous prime is 1378828667. The next prime is 1378828697. The reversal of 1378828680 is 868288731.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150834 + ... + 159713.

It is an arithmetic number, because the mean of its divisors is an integer number (66379635).

Almost surely, 2^1378828680 is an apocalyptic number.

1378828680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378828680 is an abundant number, since it is smaller than the sum of its proper divisors (2869467960).

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

1378828680 is a wasteful number, since it uses less digits than its factorization.

1378828680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310598 (or 310594 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 1378828680 is about 37132.5824579977. The cubic root of 1378828680 is about 1113.0211988674.

The spelling of 1378828680 in words is "one billion, three hundred seventy-eight million, eight hundred twenty-eight thousand, six hundred eighty".