1001045001 has 16 divisors (see below), whose sum is σ = 1532701440. Its totient is φ = 574762320.

The previous prime is 1001044999. The next prime is 1001045029. The reversal of 1001045001 is 1005401001.

It is a happy number.

It is not a de Polignac number, because 1001045001 - 2¹ = 1001044999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001045081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797655 + ... + 798908.

It is an arithmetic number, because the mean of its divisors is an integer number (95793840).

Almost surely, 2^1001045001 is an apocalyptic number.

1001045001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001045001 is a deficient number, since it is larger than the sum of its proper divisors (531656439).

1001045001 is a wasteful number, since it uses less digits than its factorization.

1001045001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596596.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1001045001 is about 31639.2952039074. The cubic root of 1001045001 is about 1000.3482124007.

Adding to 1001045001 its reverse (1005401001), we get a palindrome (2006446002).

The spelling of 1001045001 in words is "one billion, one million, forty-five thousand, one".