1441561000 has 128 divisors (see below), whose sum is σ = 3807648000. Its totient is φ = 506016000.

The previous prime is 1441560997. The next prime is 1441561007. The reversal of 1441561000 is 1651441.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1441561007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316741 + ... + 321259.

It is an arithmetic number, because the mean of its divisors is an integer number (29747250).

Almost surely, 2^1441561000 is an apocalyptic number.

1441561000 is a gapful number since it is divisible by the number (10) 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 1441561000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903824000).

1441561000 is an abundant number, since it is smaller than the sum of its proper divisors (2366087000).

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

1441561000 is a wasteful number, since it uses less digits than its factorization.

1441561000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580 (or 4566 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1441561000 is about 37967.8943319221. The cubic root of 1441561000 is about 1129.6511309805.

The spelling of 1441561000 in words is "one billion, four hundred forty-one million, five hundred sixty-one thousand".