1381368576 has 144 divisors (see below), whose sum is σ = 4221955584. Its totient is φ = 392773632.

The previous prime is 1381368557. The next prime is 1381368577. The reversal of 1381368576 is 6758631831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1381368577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413400 + ... + 1414376.

It is an arithmetic number, because the mean of its divisors is an integer number (29319136).

Almost surely, 2^1381368576 is an apocalyptic number.

1381368576 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 1381368576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2110977792).

1381368576 is an abundant number, since it is smaller than the sum of its proper divisors (2840587008).

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

1381368576 is an equidigital number, since it uses as much as digits as its factorization.

1381368576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266 (or 1252 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 1381368576 is about 37166.7670910452. The cubic root of 1381368576 is about 1113.7041998547.

The spelling of 1381368576 in words is "one billion, three hundred eighty-one million, three hundred sixty-eight thousand, five hundred seventy-six".