1001449128 has 16 divisors (see below), whose sum is σ = 2503622880. Its totient is φ = 333816368.

The previous prime is 1001449123. The next prime is 1001449129. The reversal of 1001449128 is 8219441001.

It is a junction number, because it is equal to n+sod(n) for n = 1001449095 and 1001449104.

It is not an unprimeable number, because it can be changed into a prime (1001449123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20863500 + ... + 20863547.

It is an arithmetic number, because the mean of its divisors is an integer number (156476430).

Almost surely, 2^1001449128 is an apocalyptic number.

It is an amenable number.

1001449128 is an abundant number, since it is smaller than the sum of its proper divisors (1502173752).

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

1001449128 is a wasteful number, since it uses less digits than its factorization.

1001449128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41727056 (or 41727052 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1001449128 is about 31645.6810323305. The cubic root of 1001449128 is about 1000.4828095241.

The spelling of 1001449128 in words is "one billion, one million, four hundred forty-nine thousand, one hundred twenty-eight".