1001133444 has 48 divisors (see below), whose sum is σ = 2370251520. Its totient is φ = 328849920.

The previous prime is 1001133359. The next prime is 1001133479. The reversal of 1001133444 is 4443311001.

It is a super-2 number, since 2×1001133444² = 2004536345390602272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001133444.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243397 + ... + 247475.

It is an arithmetic number, because the mean of its divisors is an integer number (49380240).

Almost surely, 2^1001133444 is an apocalyptic number.

It is an amenable number.

1001133444 is an abundant number, since it is smaller than the sum of its proper divisors (1369118076).

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

1001133444 is a wasteful number, since it uses less digits than its factorization.

1001133444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1001133444 is about 31640.6928495569. The cubic root of 1001133444 is about 1000.3776720126.

Adding to 1001133444 its reverse (4443311001), we get a palindrome (5444444445).

The spelling of 1001133444 in words is "one billion, one million, one hundred thirty-three thousand, four hundred forty-four".