1002144441 has 16 divisors (see below), whose sum is σ = 1438776000. Its totient is φ = 618137088.

The previous prime is 1002144439. The next prime is 1002144443. The reversal of 1002144441 is 1444412001.

It is an interprime number because it is at equal distance from previous prime (1002144439) and next prime (1002144443).

It is not a de Polignac number, because 1002144441 - 2¹ = 1002144439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002144443) 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, 163516 + ... + 169533.

It is an arithmetic number, because the mean of its divisors is an integer number (89923500).

Almost surely, 2^1002144441 is an apocalyptic number.

It is an amenable number.

1002144441 is a deficient number, since it is larger than the sum of its proper divisors (436631559).

1002144441 is a wasteful number, since it uses less digits than its factorization.

1002144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333128.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1002144441 is about 31656.6650328173. The cubic root of 1002144441 is about 1000.7143033160.

Adding to 1002144441 its reverse (1444412001), we get a palindrome (2446556442).

The spelling of 1002144441 in words is "one billion, two million, one hundred forty-four thousand, four hundred forty-one".