1380727648 has 48 divisors (see below), whose sum is σ = 2796825024. Its totient is φ = 670643200.

The previous prime is 1380727643. The next prime is 1380727687. The reversal of 1380727648 is 8467270831.

It is a super-2 number, since 2×1380727648² = 3812817675903223808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1380727598 and 1380727607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380727643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 202698 + ... + 209398.

It is an arithmetic number, because the mean of its divisors is an integer number (58267188).

Almost surely, 2^1380727648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380727648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398412512).

1380727648 is an abundant number, since it is smaller than the sum of its proper divisors (1416097376).

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

1380727648 is a wasteful number, since it uses less digits than its factorization.

1380727648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895 (or 6887 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 1380727648 is about 37158.1437641871. The cubic root of 1380727648 is about 1113.5319275533.

It can be divided in two parts, 1380 and 727648, that added together give a triangular number (729028 = T₁₂₀₇).

The spelling of 1380727648 in words is "one billion, three hundred eighty million, seven hundred twenty-seven thousand, six hundred forty-eight".