1011982117 has 4 divisors (see below), whose sum is σ = 1016440416. Its totient is φ = 1007523820.

The previous prime is 1011982087. The next prime is 1011982121. The reversal of 1011982117 is 7112891101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011982117 - 2¹⁵ = 1011949349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011982177) 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, 2228809 + ... + 2229262.

It is an arithmetic number, because the mean of its divisors is an integer number (254110104).

Almost surely, 2^1011982117 is an apocalyptic number.

It is an amenable number.

1011982117 is a deficient number, since it is larger than the sum of its proper divisors (4458299).

1011982117 is an equidigital number, since it uses as much as digits as its factorization.

1011982117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458298.

The product of its (nonzero) digits is 1008, while the sum is 31.

The square root of 1011982117 is about 31811.6663662877. Note that the first 3 decimals coincide. The cubic root of 1011982117 is about 1003.9781920021.

The spelling of 1011982117 in words is "one billion, eleven million, nine hundred eighty-two thousand, one hundred seventeen".