1380538016 has 144 divisors (see below), whose sum is σ = 3353555520. Its totient is φ = 553512960.

The previous prime is 1380538013. The next prime is 1380538021. The reversal of 1380538016 is 6108350831.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1380538013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1367720 + ... + 1368728.

It is an arithmetic number, because the mean of its divisors is an integer number (23288580).

Almost surely, 2^1380538016 is an apocalyptic number.

1380538016 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 1380538016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676777760).

1380538016 is an abundant number, since it is smaller than the sum of its proper divisors (1973017504).

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

1380538016 is a wasteful number, since it uses less digits than its factorization.

1380538016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1380538016 is about 37155.5919882862. The cubic root of 1380538016 is about 1113.4809469575.

Adding to 1380538016 its reverse (6108350831), we get a palindrome (7488888847).

The spelling of 1380538016 in words is "one billion, three hundred eighty million, five hundred thirty-eight thousand, sixteen".