1381444848 has 160 divisors (see below), whose sum is σ = 4624704000. Its totient is φ = 394656192.

The previous prime is 1381444829. The next prime is 1381444849. The reversal of 1381444848 is 8484441831.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381444849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143515 + ... + 152837.

It is an arithmetic number, because the mean of its divisors is an integer number (28904400).

Almost surely, 2^1381444848 is an apocalyptic number.

1381444848 is a gapful number since it is divisible by the number (18) 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 1381444848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312352000).

1381444848 is an abundant number, since it is smaller than the sum of its proper divisors (3243259152).

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

1381444848 is an equidigital number, since it uses as much as digits as its factorization.

1381444848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361 (or 9335 counting only the distinct ones).

The product of its digits is 393216, while the sum is 45.

The square root of 1381444848 is about 37167.7931548269. The cubic root of 1381444848 is about 1113.7246971317.

The spelling of 1381444848 in words is "one billion, three hundred eighty-one million, four hundred forty-four thousand, eight hundred forty-eight".