1380738816 has 108 divisors (see below), whose sum is σ = 4190670120. Its totient is φ = 436008960.

The previous prime is 1380738803. The next prime is 1380738817. The reversal of 1380738816 is 6188370831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380738817) 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 11 ways as a sum of consecutive naturals, for example, 28006 + ... + 59546.

Almost surely, 2^1380738816 is an apocalyptic number.

1380738816 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 1380738816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2095335060).

1380738816 is an abundant number, since it is smaller than the sum of its proper divisors (2809931304).

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

1380738816 is a wasteful number, since it uses less digits than its factorization.

1380738816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31582 (or 31565 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1380738816 is about 37158.2940404965. The cubic root of 1380738816 is about 1113.5349298087.

The spelling of 1380738816 in words is "one billion, three hundred eighty million, seven hundred thirty-eight thousand, eight hundred sixteen".