1001163444 has 12 divisors (see below), whose sum is σ = 2336048064. Its totient is φ = 333721144.

The previous prime is 1001163437. The next prime is 1001163451. The reversal of 1001163444 is 4443611001.

It is an interprime number because it is at equal distance from previous prime (1001163437) and next prime (1001163451).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1001163444² = 2004656483203882272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41715132 + ... + 41715155.

It is an arithmetic number, because the mean of its divisors is an integer number (194670672).

Almost surely, 2^1001163444 is an apocalyptic number.

It is an amenable number.

1001163444 is an abundant number, since it is smaller than the sum of its proper divisors (1334884620).

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

1001163444 is a wasteful number, since it uses less digits than its factorization.

1001163444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83430294 (or 83430292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1001163444 is about 31641.1669190629. The cubic root of 1001163444 is about 1000.3876643636.

Adding to 1001163444 its reverse (4443611001), we get a palindrome (5444774445).

The spelling of 1001163444 in words is "one billion, one million, one hundred sixty-three thousand, four hundred forty-four".