1380731712 has 112 divisors (see below), whose sum is σ = 3734482752. Its totient is φ = 450109440.

The previous prime is 1380731669. The next prime is 1380731717. The reversal of 1380731712 is 2171370831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380731717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2328088 + ... + 2328680.

It is an arithmetic number, because the mean of its divisors is an integer number (33343596).

Almost surely, 2^1380731712 is an apocalyptic number.

1380731712 is a gapful number since it is divisible by the number (12) 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 1380731712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867241376).

1380731712 is an abundant number, since it is smaller than the sum of its proper divisors (2353751040).

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

1380731712 is a wasteful number, since it uses less digits than its factorization.

1380731712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 1380731712 is about 37158.1984493328. The cubic root of 1380731712 is about 1113.5330200664.

The spelling of 1380731712 in words is "one billion, three hundred eighty million, seven hundred thirty-one thousand, seven hundred twelve".