1001394944 has 36 divisors (see below), whose sum is σ = 2180600520. Its totient is φ = 455178240.

The previous prime is 1001394941. The next prime is 1001394967. The reversal of 1001394944 is 4494931001.

It is not an unprimeable number, because it can be changed into a prime (1001394941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174989 + ... + 180620.

Almost surely, 2^1001394944 is an apocalyptic number.

It is an amenable number.

1001394944 is an abundant number, since it is smaller than the sum of its proper divisors (1179205576).

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

1001394944 is an equidigital number, since it uses as much as digits as its factorization.

1001394944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355636 (or 355622 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1001394944 is about 31644.8249165642. The cubic root of 1001394944 is about 1000.4647652931.

The spelling of 1001394944 in words is "one billion, one million, three hundred ninety-four thousand, nine hundred forty-four".