1441644961 has 9 divisors (see below), whose sum is σ = 1477624689. Its totient is φ = 1406523636.

The previous prime is 1441644947. The next prime is 1441644973. The reversal of 1441644961 is 1694461441.

The square root of 1441644961 is 37969.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1441644961 - 2⁷ = 1441644833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1441644901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1632226 + ... + 1633108.

It is an arithmetic number, because the mean of its divisors is an integer number (164180521).

Almost surely, 2^1441644961 is an apocalyptic number.

1441644961 is the 37969-th square number.

1441644961 is the 18985-th centered octagonal number.

It is an amenable number.

1441644961 is a deficient number, since it is larger than the sum of its proper divisors (35979728).

1441644961 is an frugal number, since it uses more digits than its factorization.

1441644961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 926 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The cubic root of 1441644961 is about 1129.6730620208.

Multiplying 1441644961 by its product of digits (82944), we get a square (119575799645184 = 10935072²).

The spelling of 1441644961 in words is "one billion, four hundred forty-one million, six hundred forty-four thousand, nine hundred sixty-one".