1001441165 has 4 divisors (see below), whose sum is σ = 1201729404. Its totient is φ = 801152928.

The previous prime is 1001441153. The next prime is 1001441167. The reversal of 1001441165 is 5611441001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187936681 + 813504484 = 13709^2 + 28522^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001441165 - 2¹⁸ = 1001179021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001441165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001441167) 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 3 ways as a sum of consecutive naturals, for example, 100144112 + ... + 100144121.

It is an arithmetic number, because the mean of its divisors is an integer number (300432351).

Almost surely, 2^1001441165 is an apocalyptic number.

It is an amenable number.

1001441165 is a deficient number, since it is larger than the sum of its proper divisors (200288239).

1001441165 is an equidigital number, since it uses as much as digits as its factorization.

1001441165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200288238.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1001441165 is about 31645.5552171233. Note that the first 3 decimals coincide. The cubic root of 1001441165 is about 1000.4801577450.

Adding to 1001441165 its reverse (5611441001), we get a palindrome (6612882166).

The spelling of 1001441165 in words is "one billion, one million, four hundred forty-one thousand, one hundred sixty-five".