1381241268 has 96 divisors (see below), whose sum is σ = 3980430720. Its totient is φ = 410641920.

The previous prime is 1381241231. The next prime is 1381241327. The reversal of 1381241268 is 8621421831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51996 + ... + 73932.

It is an arithmetic number, because the mean of its divisors is an integer number (41462820).

Almost surely, 2^1381241268 is an apocalyptic number.

1381241268 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 1381241268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1990215360).

1381241268 is an abundant number, since it is smaller than the sum of its proper divisors (2599189452).

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

1381241268 is a wasteful number, since it uses less digits than its factorization.

1381241268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22014 (or 22006 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1381241268 is about 37165.0543925339. The cubic root of 1381241268 is about 1113.6699855224.

The spelling of 1381241268 in words is "one billion, three hundred eighty-one million, two hundred forty-one thousand, two hundred sixty-eight".