1001980001 has 8 divisors (see below), whose sum is σ = 1093492704. Its totient is φ = 910537920.

The previous prime is 1001979977. The next prime is 1001980003. The reversal of 1001980001 is 1000891001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001980001 - 2²⁶ = 934871137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001980003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14585 + ... + 47081.

It is an arithmetic number, because the mean of its divisors is an integer number (136686588).

Almost surely, 2^1001980001 is an apocalyptic number.

1001980001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001980001 is a deficient number, since it is larger than the sum of its proper divisors (91512703).

1001980001 is a wasteful number, since it uses less digits than its factorization.

1001980001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35311.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1001980001 is about 31654.0676848964. The cubic root of 1001980001 is about 1000.6595652114.

The spelling of 1001980001 in words is "one billion, one million, nine hundred eighty thousand, one".