1441343781 has 16 divisors (see below), whose sum is σ = 2247710400. Its totient is φ = 910322064.

The previous prime is 1441343777. The next prime is 1441343797. The reversal of 1441343781 is 1873431441.

1441343781 is a `hidden beast` number, since 144 + 1 + 3 + 437 + 81 = 666.

It is not a de Polignac number, because 1441343781 - 2² = 1441343777 is a prime.

It is a super-2 number, since 2×1441343781² = 4154943790054751922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441343711) 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, 1404306 + ... + 1405331.

It is an arithmetic number, because the mean of its divisors is an integer number (140481900).

Almost surely, 2^1441343781 is an apocalyptic number.

It is an amenable number.

1441343781 is a deficient number, since it is larger than the sum of its proper divisors (806366619).

1441343781 is a wasteful number, since it uses less digits than its factorization.

1441343781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809665 (or 2809659 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1441343781 is about 37965.0336625690. The cubic root of 1441343781 is about 1129.5943883210.

The spelling of 1441343781 in words is "one billion, four hundred forty-one million, three hundred forty-three thousand, seven hundred eighty-one".