1002001982 has 8 divisors (see below), whose sum is σ = 1527642552. Its totient is φ = 492787800.

The previous prime is 1002001963. The next prime is 1002001991. The reversal of 1002001982 is 2891002001.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106444 + ... + 4106687.

It is an arithmetic number, because the mean of its divisors is an integer number (190955319).

Almost surely, 2^1002001982 is an apocalyptic number.

1002001982 is a deficient number, since it is larger than the sum of its proper divisors (525640570).

1002001982 is an equidigital number, since it uses as much as digits as its factorization.

1002001982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213194.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1002001982 is about 31654.4148895537. The cubic root of 1002001982 is about 1000.6668825022. Note that the first 3 decimals are identical.

Adding to 1002001982 its reverse (2891002001), we get a palindrome (3893003983).

The spelling of 1002001982 in words is "one billion, two million, one thousand, nine hundred eighty-two".