1001011982 has 4 divisors (see below), whose sum is σ = 1501517976. Its totient is φ = 500505990.

The previous prime is 1001011981. The next prime is 1001011987. The reversal of 1001011982 is 2891101001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2891101001 = 43 ⋅67234907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001011981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250252994 + ... + 250252997.

It is an arithmetic number, because the mean of its divisors is an integer number (375379494).

Almost surely, 2^1001011982 is an apocalyptic number.

1001011982 is a deficient number, since it is larger than the sum of its proper divisors (500505994).

1001011982 is an equidigital number, since it uses as much as digits as its factorization.

1001011982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500505993.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 1001011982 is about 31638.7733959457. The cubic root of 1001011982 is about 1000.3372136075.

Adding to 1001011982 its reverse (2891101001), we get a palindrome (3892112983).

The spelling of 1001011982 in words is "one billion, one million, eleven thousand, nine hundred eighty-two".